Everything you need to know about the Orion Nebula. How to find it in your sky tonight. Plus … the science of this star factory in space.
captured this image in southern Sweden on January 2, 2017. You can recognize the constellation Orion by his 3 Belt stars, 3 stars in a short, straight row. The Orion Nebula is that red fuzzy region in Orion's Sword, hanging from the Belt.
Yes, it will. Someday the star Betelgeuse will run out of fuel, collapse under its own weight, and then rebound in a spectacular supernova explosion. Someday … but probably not soon.
Finding star distances isn’t easy. Here’s how it’s done, and why astronomers modified the distance estimate to the famous star Betelgeuse.
Photo Credit: A. Dupree, R. Gilliland, NASA
On January 21, 1968, in what came to be known as the Thule incident, a U.S. jet carrying 4 nuclear bombs crashed in Greenland, spreading radioactive wreckage across 3 square miles of a frozen fjord.
Cleanup crew search for radioactive debris. Image via U.S. Air Force.
The young moon is back in the evening sky, waxing toward a lunar eclipse on January 31.
Young moon of January 18, 2018 from Aimilianos Gkekas at Meteora
near Kalambaka, Greece.
NASA says 2nd-warmest year on record. NOAA says 3rd-warmest. Their methodologies differ slightly, but – by both standards – the 2017 results make the past 4 years the hottest yet recorded.
A new topographic map of Titan, plus a new study showing that Titan’s seas lie at an average elevation – a sea level – just as Earth’s do.
Ligeia Mare, shown in here in data obtained by NASA's Cassini spacecraft, is the second largest known body of liquid on Saturn's moon Titan. It is filled with liquid hydrocarbons, such as ethane and methane, and is one of the many seas and lakes that bejewel Titan's north polar region. Image credit: NASA/JPL-Caltech/ASI/Cornell
In the 19th century, passenger pigeons were so numerous that hunters competed to shoot as many as possible. But the last passenger pigeon died in the Cincinnati Zoo over 100 years ago. How did it all go so wrong?
This illustration shows how passenger pigeons were shot in huge numbers by Europeans. Illustration by Smith Bennett.
Settling a long debate, astrophysicists at Goethe University Frankfurt now say neutron stars can’t exceed the mass of 2.16 suns.
Gravitational-wave emission from a collapsing star, via Goethe University.