Japan’s newest X-ray satellite, Hitomi (formerly Astro-H), promises to reveal the hot and hidden universe.
Among its other geologic oddities, Pluto has clusters of hills floating in a frozen “sea” dominated by nitrogen ice. These bobbing bumps might hold clues to the plain’s depth and evolution.
How Astronomers Count Sunspots
A multi-year investigation revealed errors in our understanding of the Sun.
Look for Castor and Pollux near the waxing Moon, then on February 23rd watch the Moon and Jupiter rise together.
Jove begins a new apparition with a redder Red Spot, pirouetting moons, and ever-changing cloudscapes.
This month’s audio sky tour starts before dawn, when you can spot all five bright planets by eye, and moves to the sparkling stars seen on winter evenings.
The immense Omega Centauri is widely regarded as the most impressive globular cluster in the sky. Its deep southern location makes this object challenging to spot – but it can be done, as Italian observer Giuseppe Pappa explains.