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Coming up! Lunar eclipse April 25-26, 2013
The April 25-26 lunar eclipse is a partial, lasting just 27 minutes - the third-shortest partial lunar eclipse of the 21st century.
April 24, 2013
Android app for simulates eclipses
A tool for astronomy lovers that allows to know the general and local circumstances for solar and lunar eclipses and planetary transits.
January 18, 2013
Will you still see meteors tonight, December 14, 2012? Yes!
The peak of the Geminid meteor shower is past - but only barely. If you watch late tonight or in the wee hours tomorrow, you should still see some meteors.
December 14, 2012
Apogalacticon: What is it?
The apogalacticon marks where the sun is farthest from the heart of the Milky Way on its 250 million year orbit around the galactic center.
August 18, 2012
Did Earth cross the galactic equator in 2012?
Earth didn't physically cross the plane of our Milky Way galaxy in 2012. But Earth did cross the galactic equator in 2012. That's something we do every year - twice.
July 19, 2012
X-rays reveal the violent side of the universe
In astronomy, X-rays look at interstellar gas heated to millions of degrees around extreme environments like black holes, neutron stars, and colliding galaxies.
July 15, 2012
VLBI reveals the universe in amazing detail
Very Long Baseline Interferometry, or VLBI, links together widely separated radio telescopes to allow astronomers to see the universe in more detail than ever.
July 5, 2012
Sidereal time: What is it?
Sidereal time measures the rotation of our planet relative to the stars. It allows astronomers to keep time without worrying about the motion of Earth around the sun.
June 10, 2012
Venus transit on June 5-6: Everything you need to know:
The Venus transit appeared as a small dark dot crossing sun's face for last time this century on June 5-6, 2012. Last transit of Venus in our lifetimes!
June 5, 2012
Three planets – Mars, Saturn, Venus – at nightfall throughout May 2012
Three planets light up the sky as soon as darkness falls on these May 2012 nights. This post tells you how to spot them.
May 1, 2012
