April 28, 2016 Leap day: The story behind this quirky calendar event Monday is Feb. 29 — the bissextle or "leap day," an artifact that dates back to the year 46 B.C. Back then, Julius Caesar took the advice of the learned astronomer Sosigenes of Alexandria, who knew from Egyptian experience that the tropical year (also known as the solar year) was about 365.25 days in length.
April 28, 2016 100-foot asteroid to buzz Earth next month An asteroid as long as a basketball court will give Earth a close shave next month — though scientists aren't sure just how close.
April 28, 2016 Pluto's blue bands get high-resolution makeover Pluto's blue bands shine spectacularly in the highest-resolution image yet of the dwarf planet's atmosphere.
April 28, 2016 How astronomers could actually see 'Planet Nine' If Planet Nine really exists, astronomers have a pretty decent chance of spotting it.
April 28, 2016 NASA's Kepler comes roaring back with 100 new exoplanet finds NASA's Kepler spacecraft has bounced back nicely from the malfunction that ended its original exoplanet hunt more than two years ago.
April 28, 2016 New film 'A Beautiful Planet' offers stunning views of Earth The new film “A Beautiful Planet” looks to give audiences a view of Earth like never before – the movie features footage captured by astronauts on the International Space Station and is shown in IMAX and IMAX 3D.
April 26, 2016 Alien hunters claim Venus has buildings Space might very well be considered the “final frontier,” but according to alien hunters, intelligent life on Venus includes cities for its inhabitants.
April 13, 2016 1917 glass plate offers oldest evidence of exoplanetary system Scientists have found the oldest-known manmade evidence of an exoplanetary system— and it’s been sitting in a basement for almost a century on a piece of glass.
April 11, 2016 NASA races to save planet-hunting Kepler spacecraft NASA is trying to resuscitate its planet-hunting Kepler spacecraft, in a state of emergency nearly 75 million miles away.
April 11, 2016 NASA: Saturn probe unaffected by hypothetical Planet Nine NASA has nixed reports that its Cassini spacecraft is experiencing unexplained deviations in its orbit around Saturn caused by the hypothetical Planet Nine.
