in 2011 the unmanned dawn spacecraft became humanity 's first ever emissary to the huge asteroid vesta , which resides in the asteroid belt between mars and jupiter . and using images collected by the spacecraft , nasa has unveiled an interactive tool that lets you explore this world . using the map you can see a huge amount of features on vesta , from craters to the amount of sunlight hitting the surface - and switching to ` 3d mode ' also lets you fly around like you were in your own spacecraft . called vesta trek , the interactive programme lets you explore massive craters on the body - which has no atmosphere , and thus no protection like our own earth . vesta , discovered in 1807 , is the second most massive body in the asteroid belt after the dwarf planet ceres - which dawn has now travelled to . it completes a rotation every five hours and 18 minutes , with a temperature ranging from -3 °c -lrb- 27 °f -rrb- to -188 °c -lrb- -306 °f -rrb- . some meteorites on earth have been found to originate from places like vesta . as you explore the asteroid , you will come across various ` troughs ' - areas where the ground sinks away . the largest of these is up to 12 miles -lrb- 20km -rrb- wide and 289 miles -lrb- 465km -rrb- long , similar in size to the grand canyon on earth . elsehwere there are craters , hills and mountains on the surface , most formed by impacts . condition : jessica knight ca n't stop eating carpet underlay and the stuffing from soft furnishings . on the map you can switch between three main views - over the north pole , a global view or looking down onto the south pole . it 's not the first time a child has been accused of eating her parents out of house and home -- but in jessica knight 's case , it 's literally true . various tools also let you find out more information about the asteroid . you can draw lines on the surface to see elevation levels , place a pin to see how the angle of the sun changes at a location over time , or even draw a box to generate files to use with a 3d printer . there 's also an option to 3d print an entire model of vesta . nasa scientists in california have revealed an interactive 3d map for vesta -lrb- shown -rrb- using images from the dawn spacecraft . the map lets you see features on the surface including craters , hills , mountains and even ` canyons ' you can also measure elevation changes on the surface and see different measurement data . and a ` gaming mode ' lets you fly around the largest asteroid in the solar system using your keyboard 's arrow keys . the four-year-old has an unusual appetite for furniture , soft furnishings and fittings , and doctors say they are unable to treat her . hardly anything is off the youngster 's menu , with the filling from a rocking horse , padding in an armchair and even carpet underlay taking her fancy . other non-food items she devours include sand and chips of cement from paving blocks . jessica suffers from pica , a rare medical disorder that leads to an appetite for non-nutritious substances . it is more commonly recognised among pregnant women , some of whom develop unusual cravings . in the bottom right of the map is a scale , where you can change the units of measurement by clicking . aside from using imperial and metric units of measurement - kilometres and miles - it also lets you measure distances in golden gate bridges , football fields and school buses . ` i was really shocked when i realised just how much she was eating . if you lift up the carpet in her room now you can see there is no underlay left , ' said her mother , kelly will . ` we are at our wits ' end . we try to keep her busy so she does n't do it , but if we try to stop her she will find a way to do it . ` i 'd have to remove everything from my house , including all chairs and sofas . ' miss will , 36 , first noticed the problem when jessica was two and began eating the filling from a children 's armchair . staff at her pre-school also spotted her licking her hands and placing them in a sandpit before sucking the grains from her fingers , before tell-tale signs of snack-attacks became clear from the damage to items around the house . jessica , who has a three-year-old sister , jennifer , is now allowed to keep a small purse filled with some of the spongy underlay to eat . various data can also be overlayed on the map , such as the amount of iron or hydrogen in certain regions . the dawn spacecraft spent a year , from 2011 to 2012 , mapping and exploring vesta . it is so large compared to other asteroids that is sometimes referred to as a minor planet . the spacecraft is now orbiting the dwarf planet ceres , and over the next few months will be spiraling down closer and closer to image more of it . you can draw lines on the surface to see elevation levels -lrb- shown -rrb- , place a pin to see how the angle of the sun changes at a location over time , or even draw a box to generate files to use with a 3d printer . cravings : jessica 's pica makes her want to eat substances including sponge , sand and even rocks . worry : kelly knight says doctors are unable to treat jessica until she is six years old . the dawn spacecraft spent a year , from 2011 to 2012 , mapping and exploring vesta -lrb- illustration shown -rrb- . it is so large compared to other asteroids that is sometimes referred to as a minor planet . her mother , who lives in march , cambridgeshire , with partner chris knight , 40 , an engineer , said : ` we 'd rather she ate the underlay because it is non-toxic . if we try and stop her we fear she will eat something with chemicals in it . ' pica is an eating disorder that is characterised by the desire to eat items with little or no nutritional value . these can include stones , sand , paint and dirt . it is most common in people with learning disabilities and during pregnancy . it can cause a range of serious complications if the person is eating something that is poisonous or indigestible . these include being poisoned by toxic ingredients and having a part of the body obstructed -lrb- which is often seen in people who eat hair -rrb- . it can also lead to excessive calorie intake , but also nutritional deprivation if the person eats a substance with no nutritional value instead of nutritious foods . the person can also damage their teeth and be infected with parasites . experts have examined jessica but said they can not intervene until she is six , and old enough to make conscious decisions about what she eats rather than acting on impulse . fortunately , she does like plain sausages , cheese strings , rice pudding , bread , weetabix and fish fingers . but her unusual snacks can leave her in agony because they cause stomach cramps and constipation . despite her tender years , jessica is aware that her diet is highly unusual , and does worry what people would think of her craving different food . she also shuts her little sister out of their shared room when she is satisfying one of her cravings , saying : ` i do n't want her to be poorly . ' the family will find out this month if jessica is on the autistic spectrum , which is often linked to pica . the challenging behaviour foundation , a learning problems charity , said : ` it is estimated that four to 26 per cent of people with learning disabilities display pica behaviour . ` whilst some objects pass through the body without harm , pica can potentially be life-threatening . risks include vomiting , blockages , choking and poisoning . ' dr alison sansome , clinical director at cambridgeshire community services nhs trust , added : ` pica is a complex condition and treatment is dictated by the specific circumstances in each case . ' damage : half of the carpet underlay in jessica 's bedroom has vanished because she has eaten it . control : jessica 's parents have given her a purse full of bits of sponge to eat .
jessica knight loves eating carpet underlay and furniture stuffing . she also snacks on sand and rocks even though parents try to stop her . family now give her a purse full of sponge to control her cravings . jessica suffers from rare condition pica but doctors say they ca n't treat her until she is six years old .
and doctors say they are unable to treat her . hardly anything is off the youngster 's menu , with the filling from a rocking horse , padding in an armchair and even carpet underlay taking her fancy . other non-food items she devours include sand and chips of cement from paving blocks . jessica suffers from pica , a rare medical disorder that leads to an appetite for non-nutritious substances . it is more commonly recognised among pregnant women , some of whom develop unusual cravings . in the bottom right of the map is a scale , where you can change the units of measurement by clicking . aside from using imperial and metric units of measurement - kilometres and miles - it also lets you measure distances in golden gate bridges , football fields and school buses . ` i was really shocked when i realised just how much she was eating . if you lift up the carpet in her room now you can see there is no underlay left , ' said her mother , kelly will . ` we are at our wits ' end . we try to keep her busy so she does n't do it , but if we try to stop her she will find a way to do it . ` i 'd have to remove everything from my house , including all chairs and sofas . ' miss will , 36 , first noticed the problem when jessica was two and began eating the filling from a children 's armchair . staff at her pre-school also spotted her licking her hands and placing them in a sandpit before sucking the grains from her fingers , before tell-tale signs of snack-attacks became clear from the damage to items around the house . jessica , who has a three-year-old sister , jennifer , is now allowed to keep a small purse filled with some of the spongy underlay to eat . various data can also be overlayed on the map , such as the amount of iron or hydrogen in certain regions . the dawn spacecraft spent a year , from 2011 to 2012 , mapping and exploring vesta . it is so large compared to other asteroids that is sometimes referred to as a minor planet . the spacecraft is now orbiting the dwarf planet ceres , and over the next few months will be spiraling down closer and closer to image more of it . you can draw lines on the surface to see elevation levels -lrb- shown -rrb- , place a pin to see how the angle of the sun changes at a location over time , or even draw a box to generate files to use with a 3d printer . cravings : jessica 's pica makes her want to eat substances including sponge , sand and even rocks . worry : kelly knight says doctors are unable to treat jessica until she is six years old . the dawn spacecraft spent a year , from 2011 to 2012 , mapping and exploring vesta -lrb- illustration shown -rrb- . it is so large compared to other asteroids that is sometimes referred to as a minor planet . her mother , who lives in march , cambridgeshire , with partner chris knight , 40 , an engineer , said : ` we 'd rather she ate the underlay because it is non-toxic . if we try and stop her we fear she will eat something with chemicals in it . ' pica is an eating disorder that is characterised by the desire to eat items with little or no nutritional value . these can include stones , sand , paint and dirt . it is most common in people with learning disabilities and during pregnancy . it can cause a range of serious complications if the person is eating something that is poisonous or indigestible . these include being poisoned by toxic ingredients and having a part of the body obstructed -lrb- which is often seen in people who eat hair -rrb- . it can also lead to excessive calorie intake , but also nutritional deprivation if the person eats a substance with no nutritional value instead of nutritious foods . the person can also damage their teeth and be infected with parasites . experts have examined jessica but said they can not intervene until she is six , and old enough to make conscious decisions about what she eats rather than acting on impulse . fortunately , she does like plain sausages , cheese strings , rice pudding , bread , weetabix and fish fingers . but her unusual snacks can leave her in agony because they cause stomach cramps and constipation . despite her tender years , jessica is aware that her diet is highly unusual , and does worry what people would think of her craving different food . she also shuts her little sister out of their shared room when she is satisfying one of her cravings , saying : ` i do n't want her to be poorly . ' the family will find out this month if jessica is on the autistic spectrum , which is often linked to pica . the challenging behaviour foundation , a learning problems charity , said : ` it is estimated that four to 26 per cent of people with learning disabilities display pica behaviour . ` whilst some objects pass through the body without harm , pica can potentially be life-threatening . risks include vomiting , blockages , choking and poisoning . ' dr alison sansome , clinical director at cambridgeshire community services nhs trust , added : ` pica is a complex condition and treatment is dictated by the specific circumstances in each case . ' damage : half of the carpet underlay in jessica 's bedroom has vanished because she has eaten it . control : jessica 's parents have given her a purse full of bits of sponge to eat .
and doctors say they are unable to treat her . hardly anything is off the youngster 's menu , with the filling from a rocking horse , padding in an armchair and even carpet underlay taking her fancy . other non-food items she devours include sand and chips of cement from paving blocks . jessica suffers from pica , a rare medical disorder that leads to an appetite for non-nutritious substances . it is more commonly recognised among pregnant women , some of whom develop unusual cravings . in the bottom right of the map is a scale , where you can change the units of measurement by clicking . aside from using imperial and metric units of measurement - kilometres and miles - it also lets you measure distances in golden gate bridges , football fields and school buses . ` i was really shocked when i realised just how much she was eating . if you lift up the carpet in her room now you can see there is no underlay left , ' said her mother , kelly will . ` we are at our wits ' end . we try to keep her busy so she does n't do it , but if we try to stop her she will find a way to do it . ` i 'd have to remove everything from my house , including all chairs and sofas . ' miss will , 36 , first noticed the problem when jessica was two and began eating the filling from a children 's armchair . staff at her pre-school also spotted her licking her hands and placing them in a sandpit before sucking the grains from her fingers , before tell-tale signs of snack-attacks became clear from the damage to items around the house . jessica , who has a three-year-old sister , jennifer , is now allowed to keep a small purse filled with some of the spongy underlay to eat . various data can also be overlayed on the map , such as the amount of iron or hydrogen in certain regions . the dawn spacecraft spent a year , from 2011 to 2012 , mapping and exploring vesta . it is so large compared to other asteroids that is sometimes referred to as a minor planet . the spacecraft is now orbiting the dwarf planet ceres , and over the next few months will be spiraling down closer and closer to image more of it . you can draw lines on the surface to see elevation levels -lrb- shown -rrb- , place a pin to see how the angle of the sun changes at a location over time , or even draw a box to generate files to use with a 3d printer . cravings : jessica 's pica makes her want to eat substances including sponge , sand and even rocks . worry : kelly knight says doctors are unable to treat jessica until she is six years old . the dawn spacecraft spent a year , from 2011 to 2012 , mapping and exploring vesta -lrb- illustration shown -rrb- . it is so large compared to other asteroids that is sometimes referred to as a minor planet . her mother , who lives in march , cambridgeshire , with partner chris knight , 40 , an engineer , said : ` we 'd rather she ate the underlay because it is non-toxic . if we try and stop her we fear she will eat something with chemicals in it . ' pica is an eating disorder that is characterised by the desire to eat items with little or no nutritional value . these can include stones , sand , paint and dirt . it is most common in people with learning disabilities and during pregnancy . it can cause a range of serious complications if the person is eating something that is poisonous or indigestible . these include being poisoned by toxic ingredients and having a part of the body obstructed -lrb- which is often seen in people who eat hair -rrb- . it can also lead to excessive calorie intake , but also nutritional deprivation if the person eats a substance with no nutritional value instead of nutritious foods . the person can also damage their teeth and be infected with parasites . experts have examined jessica but said they can not intervene until she is six , and old enough to make conscious decisions about what she eats rather than acting on impulse . fortunately , she does like plain sausages , cheese strings , rice pudding , bread , weetabix and fish fingers . but her unusual snacks can leave her in agony because they cause stomach cramps and constipation . despite her tender years , jessica is aware that her diet is highly unusual , and does worry what people would think of her craving different food . she also shuts her little sister out of their shared room when she is satisfying one of her cravings , saying : ` i do n't want her to be poorly . ' the family will find out this month if jessica is on the autistic spectrum , which is often linked to pica . the challenging behaviour foundation , a learning problems charity , said : ` it is estimated that four to 26 per cent of people with learning disabilities display pica behaviour . ` whilst some objects pass through the body without harm , pica can potentially be life-threatening . risks include vomiting , blockages , choking and poisoning . ' dr alison sansome , clinical director at cambridgeshire community services nhs trust , added : ` pica is a complex condition and treatment is dictated by the specific circumstances in each case . ' damage : half of the carpet underlay in jessica 's bedroom has vanished because she has eaten it . control : jessica 's parents have given her a purse full of bits of sponge to eat .
in 2011 the unmanned dawn spacecraft became humanity 's ever emissary the huge asteroid vesta, resides mars jupiter and using images collected the spacecraft, nasa has unveiled an interactive tool this world. using the map you a huge amount features vesta, from craters the amount sunlight hitting - switching ` 3d mode also lets fly like were your own spacecraft. called vesta trek, the interactive programme lets massive craters the body - which has no atmosphere, thus no protection like our own earth vesta, discovered 1807 the second most massive body after the dwarf planet ceres - which dawn has now travelled. it completes a rotation every five hours 18, with a temperature rangingc -lrb- 27 °f to -188 -306 some meteorites on earth have originate places vesta. as you explore the asteroid, come various ` troughs ' - areas the ground sinks away. the largest of these up to 12 miles -lrb- 20km wide 289 miles 465 long, similar the grand canyon on earth. elsehwere there are craters, hills on, most formed impacts. condition : jessica knight ca n't stop eating carpet underlay and the stuffing from soft furnishings. on the map you switch between three main views - over the north pole, a global view or looking onto it 's a child accused eating her parents out house and home -- in jessica knight 's case, literally various tools also let find more information the asteroid. you draw lines to elevation levels, place a pin the angle the sun at a location over even draw a box generate files use there 's also an option 3d an entire model vesta. nasa scientists in california revealed an interactive 3d map for vesta -lrb- shown -rrb- using images the dawn spacecraft. the map lets features the surface including craters, hills even ` canyons ' you measure on different measurement data. and a ` gaming mode lets fly the largest asteroid using your keyboard 's arrow keys. the four has an unusual appetite furniture, soft furnishings fittings doctors unable. hardly anything off the youngster 's menu, the filling from a rocking horse, padding in even carpet underlay taking her fancy. other non-food items she devours include sand and chips of cement from paving blocks. jessica suffers pica, leads an appetite. it more commonly recognised among pregnant women, some develop unusual cravings. in the bottom right is a scale, you change the units measurement. aside using imperial and metric units measurement - kilometres it also lets measure golden gate bridges, football fields school buses ` i was really shocked realised just she eating. if lift the carpet her room now there no underlay left, ' said kelly will. ` we at our wits ' end. we try her busy does n't do, if try stop find ` i 'd have remove everything, including all chairs ' miss will, 36 first noticed the problem when jessica two began eating the filling from a children 's armchair. staff at her pre also spotted licking placing a sandpit before sucking the grains from, before tell-tale signs snack-attacks became from the damage items around jessica, who, jennifer is now allowed keep a small purse filled some the spongy underlay to eat. various data can also overlayed, such the amount iron or hydrogen certain regions. the dawn spacecraft spent, from 2011 mapping and exploring vesta. it so large compared other asteroids is sometimes a minor planet. the spacecraft now orbiting the dwarf planet ceres, over spiraling down closer image more. you draw lines to elevation levels -lrb- shown -rrb-, place a pin see the angle the sun at a location over, or even draw a box generate files cravings : jessica 's pica makes want substances including sponge, sand even rocks worry : kelly knight says doctors unable jessica until six. the dawn spacecraft spent, from 2011 mapping and exploring vesta -lrb- illustration shown -rrb-. it so large compared other asteroids is sometimes a minor planet. her mother, lives march cambridgeshire with partner chris knight 40 an engineer said ` we 'd rather she ate the underlay because non. if we try stop her fear eat something with chemicals. ' pica is an eating disorder characterised the desire items. these can include stones, sand paint dirt it most common people learning during. it can cause a range serious complications if eating something poisonous. these include being poisoned toxic ingredients a part obstructed -lrb- which often seen eat hair -rrb-. it can also lead excessive calorie intake, but also nutritional deprivation if a substance instead nutritious foods the person can also damage their teeth be infected parasites. experts have examined jessica but said can intervene until she six, old make conscious decisions eats rather acting impulse fortunately, she does like plain sausages cheese strings rice pudding bread weetabix fish fingers but her unusual snacks can leave in agony because cause. despite her tender years, jessica aware her diet highly unusual does worry what people craving different food she also shuts her little sister their shared room when is satisfying one her cravings, saying : ` i do n't poorly. ' the family will find this month jessica on the autistic spectrum, which often linked pica. the challenging behaviour foundation, a learning problems charity said : ` it estimated four to 26 per cent people display pica behaviour. ` whilst some objects pass without harm, pica can potentially life. risks include vomiting, blockages choking poisoning ' dr alison sansome, clinical director cambridgeshire community services nhs trust, added ` pica is a complex condition treatment dictated in. ' damage : half the carpet underlay in jessica 's bedroom has vanished because has eaten. control : jessica 's parents have given a purse bits sponge.
and doctors say they are unable to treat her . hardly anything is off the youngster 's menu , with the filling from a rocking horse , padding in an armchair and even carpet underlay taking her fancy . other non-food items she devours include sand and chips of cement from paving blocks . jessica suffers from pica , a rare medical disorder that leads to an appetite for non-nutritious substances . it is more commonly recognised among pregnant women , some of whom develop unusual cravings . in the bottom right of the map is a scale , where you can change the units of measurement by clicking . aside from using imperial and metric units of measurement - kilometres and miles - it also lets you measure distances in golden gate bridges , football fields and school buses . ` i was really shocked when i realised just how much she was eating . if you lift up the carpet in her room now you can see there is no underlay left , ' said her mother , kelly will . ` we are at our wits ' end . we try to keep her busy so she does n't do it , but if we try to stop her she will find a way to do it . ` i 'd have to remove everything from my house , including all chairs and sofas . ' miss will , 36 , first noticed the problem when jessica was two and began eating the 2012 , mapping and exploring vesta -lrb- illustration shown -rrb- . it is so large compared to other asteroids that is sometimes referred to as a minor planet . her mother , who lives in march , cambridgeshire , with partner chris knight , 40 , an engineer , said : ` we 'd rather she ate the underlay because it is non-toxic . if we try and stop her we fear she will eat something with chemicals in it . ' pica is an eating disorder that is characterised by the desire to eat items with little or no nutritional value . these can include stones , sand , paint and dirt . it is most common in people with learning disabilities and during pregnancy . it can cause a range of serious complications if the person is eating something that is poisonous or indigestible . these include being poisoned by toxic ingredients and having a part of the body obstructed -lrb- which is often seen in people who eat hair -rrb- . it can also lead to excessive calorie intake , but also nutritional deprivation if the person eats a substance with no nutritional value instead of nutritious foods . the person can also damage their teeth and be infected with parasites . experts have examined jessica but said they can not intervene until she is six , and old enough to make conscious decisions about what she eats rather than acting on impulse . fortunately , she does like plain sausages , cheese strings , rice pudding , bread , weetabix and fish fingers . but her unusual snacks can leave her in agony because they cause stomach cramps and constipation . despite her tender years , jessica is aware that her diet is highly unusual , and does worry what people would think of her craving different food . she also shuts her little sister out of their shared room when she is satisfying one of her cravings , saying : ` i do n't want her to be poorly . ' the family will find out this month if jessica is on the autistic spectrum , which is often linked to pica . the challenging behaviour foundation , a learning problems charity , said : ` it is estimated that four to 26 per cent of people with learning disabilities display pica behaviour . ` whilst some objects pass through the body without harm , pica can potentially be life-threatening . risks include vomiting , blockages , choking and poisoning . ' dr alison sansome , clinical director at cambridgeshire community services nhs trust , added : ` pica is a complex condition and treatment is dictated by the specific circumstances in each case . ' damage : half of the carpet underlay in jessica 's bedroom has vanished because she has eaten it . control : jessica 's parents have given her a purse full of bits of sponge to eat .
 The text describes Jessica's struggles with her eating disorder and how it affects her daily life. She has difficulty controlling her food intake, leading to weight gain and loss of appetite. Her mother is worried about her health and tries to help her, but Jessica feels ashamed and guilty about her condition. She also experiences anxiety and depression due to the constant pressure to conform to societal beauty standards. The text highlights the importance of seeking professional help and support from loved ones in overcoming eating disorders.