THE MARTIAN DIARIES Curiosity has explored Mars for over two and a half years. What if the rover kept a scrapbook?
GREEN GOBLIN Filaments of gas known as voorwerpjes (green) orbit the galaxy UGC 7342 in this image from the Hubble Space Telescope. The galaxy is about 650 million light-years away in the constellation Coma Berenices.
NASA, ESA and W. Keel/University of Alabama, Tuscaloosa
EYE IN THE SKY A stellar nursery 20,000 light-years from Earth known as Westerlund 2 showcases the Hubble Space Telescope’s sharp vision in an image taken in honor of the observatory’s 25th anniversary.
NASA, ESA, S. Perlmutter/LBNL/UC Berkeley, A. Koekemoer/STScI, M. Postman/STScI, A. Riess/JHU, J. Nordin/LBNL/UC Berkeley, D. Rubin/Florida StateUniv., C. McCully/Rutgers Univ.