NASA’s rocket-powered, saucer-shaped test vehicle soon will fly into near-space. Join an hour-long live, interactive video broadcast on March 31.
For the first time, astronomers have seen a supermassive black hole in action, blowing away its galaxy’s reservoir of star-making gas.
The brightness of this unusual nova has gone up and down and now back up again. EarthSky friend Tom Wildoner tells you how to see the nova before it’s gone!
India’s Mars Orbiter Mission (MOM) was expected to end on March 24. But it turns out that the probe could have another 6 months of life left in it.
The discovery adds to the evidence that ancient Mars was habitable for life.
A lunar tetrad – four total lunar eclipses in a row – began a year ago. The next eclipse in this tetrad will take place on April 4, 2015.
Hear the word “pulsar” and wonder what it is? Take 95 seconds to watch this video from NASA Astrophysics.
The goal of the mission is to find out how the human body responds to a prolonged stay in space. Watch the launch, watch the arrival.
On Tuesday, the Mars rover Opportunity completed a marathon – 26.2 miles (42.195 kilometers). Its finish time? Eleven years and 2 months.
Jupiter may have swept through the early solar system like a wrecking ball, destroying a first generation of inner planets before retreating into its current orbit.
First topographical map of Ceres with named quadrangles. Scientists announced the names at last week’s Lunar and Planetary Science Conference.
The stars might be singing – but, since sound can’t propagate through the vacuum of space, no one can hear them.
New Horizons spacecraft will sweep past Pluto and its moons on July 15, revealing their surface features for the first time! You’re invited to help choose names.
The Southern Hemisphere has had two Great Comets recently – McNaught in 2007 and Lovejoy in 2011. When will the Northern Hemisphere get one?
What if an advanced civilization could collect all of the energy emitted by its star?
On the day of the equinox, the center of the sun would set about 12 hours after rising – given a level horizon, as at sea, and no atmospheric refraction.
Awesome photos of the March 20 solar eclipse, by EarthSky Facebook and G+ friends lucky enough to see it, and kind enough to share their pics.
Three eclipses in one calendar month are rare. Three eclipses in one lunar month are more common. From 2000-2050, it happens 14 times.
The Dawn spacecraft is about to start its investigation of Ceres. Suggestions of icy volcanism have led to speculation that the dwarf planet could potentially be habitable.
Spacecraft spies two strange phenomena in the Martian atmosphere: An unexplained high-altitude dust cloud and aurora that reaches deep into the Martian atmosphere.