article_snippet.sent: The images, captured by the Dawn probe from 28,000 miles (45,000km) away, show that a pair of mysterious spots on the dwarf planet have different thermal properties.
article_snippet.sent: Images are the closest taken yet, and suggest that the icy body was likely once fully active. 
article_snippet.sent: Last month, scientists said this pair of mysterious bright spots could be towering 'water volcanoes', but scientists said scientists need to take a closer look to confirm this.
article_snippet.sent: Federico Tosi, who works on Dawn's Visible and Infrared Spectrometer, presented infrared images of the two spots, measuring Federico Tosi, who works on Dawn's Visible and Infrared Spectrometer thermal properties. '
article_snippet.sent: What we have found is that bright spot number one corresponds to a dark spot in the thermal image,' bright spot number one said at a press conference today .
article_snippet.sent: Captured by the Dawn probe from 28,000 miles (45,000km) away, the images reveal that two mysterious bright flashes on the surface have different thermal properties. 
article_snippet.sent: Recent images from The Dawn spacecraft reveal feature 5 at various angles as the asteroid rotates.
article_snippet.sent: What is amazing is that you can see the feature while the rim is still in the line of sight,' said Andreas Nathues, a planetary scientist at the Max Planck Institute for Solar System Research in Göttingen, Germany.
article_snippet.sent: The 'alien' mark can be clearly seen in images the icy world as the Dawn probe hurtled the Dawn probe way towards a rendezvous on March 6 .
article_snippet.sent: According to Nature, this could mean sunlight plays an important role in the formation of the features by, for instance, heating up ice just beneath the surface and causing the surface blast of in a plume.
article_snippet.sent: The leading theory now for the alien spots is that the ice is covered by a thin layer of soil that at times forms into huge 'cryovolcanoes' due to internal pressure in the asteroid.
highlights_snippet.sent: Images from Dawn reveal the mysterious spots on the surface, named feature one and feature five, in infrared .
  
highlights_snippet.sent: Leading theory for spots is that ice covered by a thin layer of soil is exploding due to pressure in the asteroid .