TIME AND SPACE Galaxies at different distances from Earth, shown in these pictures from the Hubble Space Telescope, illustrate how the Milky Way has evolved over the last 11 billion years.
NASA, ESA, C. Papovich/Texas A&M Univ., H. Ferguson/STScI, S. Faber/Univ. of California, Santa Cruz and I. Labbé/Leiden Univ.
FLARE UP X-rays blasted from the sun can divulge the intensity of an upcoming solar flare, like the one shown here, new research shows.
AIA/SDO/GODDARD SPACE FLIGHT CENTER/NASA
Meteorites with dark veins and blobs, like the sample above, experienced high heat when the blast from the planetary collision that formed the moon hit the asteroid belt 4.47 billion years ago. The dark coloration on the edge of the sample is from entering the Earth's atmosphere.