 In 2005 , the Advanced Camera for Surveys instrument of the Hubble Space Telescope finished capturing the most detailed image of the nebula yet taken . The image was taken through 104 orbits of the telescope , capturing over 3 @,@ 000 stars down to the 23rd magnitude , including infant brown dwarfs and possible brown dwarf binary stars . A year later , scientists working with the HST announced the first ever masses of a pair of eclipsing binary brown dwarfs , 2MASS J05352184 – 0546085 . The pair are located in the Orion Nebula and have approximate masses of 0 @.@ 054 M ☉ and 0 @.@ 034 M ☉ respectively , with an orbital period of 9 @.@ 8 days . Surprisingly , the more massive of the two also turned out to be the less luminous . 
