Unexplained ripples have been found racing outward in a dusty disk around a young star.
Comet 67P’s nucleus was born when two became one.
AstroSat launched into orbit on September 28, 2015, and will soon start returning visible, ultraviolet, and X-ray images of the universe.
In early dawn on Saturday morning the 10th, look east for the waning crescent Moon below the Venus-Jupiter-Mars collection. Later in the week, the crescent Moon returns to the evening twilight, joining Saturn and Arcturus.
Like people doing good imitations, novae often mimic planetary nebulae. Read on to learn how to watch the evolution of these tricksters using a common nebula filter.
Early risers will be treated to wonderful groupings of bright planets, and the evening sky offers excellent stargazing as well.
Watch a Q&A with two astronomers on the promise of Hubble’s successor telescope, brought to you courtesy of The Kavli Foundation.