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Phobos from mars Express
ESA / DLR / FU Berlin (G. Neukum)

Bulletin at a Glance

This Week’s Sky at a Glance

March 15, 2010 | On March 7th, the European orbiter Mars Express had a close encounter with a little moon about which scientists have big questions. > read more


Future Shock From Gliese 710

March 17, 2010 | Is our solar system’s Oort Cloud in danger of being stirred up by a passing star? A fresh analysis of Hipparcos observations argue that the answer is most likely “yes” — but not for another 1.4 million years. > read more


NASA to Upgrade, Overhaul Its “Big Ears”

March 15, 2010 | Day in, day out, the radio antennas of NASA’s “Deep Space Network” handshake with dozens of spacecraft across the solar system. Now the network’s three stations are getting improvements that will keep them operating for decades. > read more




March 19, 2010 | After a couple of relatively dormant years, the Sun is showing signs of major activity again. > read more


Vesta in 2010

January 1, 2010 | Vesta was at opposition on February 18, 2010, and it shines at magnitude 7 or brighter through mid-May. > read more


A Saturn Almanac

November 12, 2008 | Spectacular Saturn is now rising shortly after dark. Click here to find printable data on the positions of Saturn’s rings and planets. > read more


Tour March’s Sky by Eye and Ear!

February 25, 2010 | What a difference a month makes! The lengthening days, together with a switch to daylight time, mean that the evening constellations are changing rapidly. So use this easy-to-follow audio tour to figure out what’s what. Host: S&T’s Kelly Beatty. (6.5MB MP3 download: running time: 6m 52s) > read more


Making the Most of Mars

January 25, 2010 | Mars is receding from Earth, but it’s still a fine, though small, target for telescopes. > read more


This Week’s Sky at a Glance


Looking west after dark
March 19, 2010 | The Moon pairs with the Pleiades and then runs under the arc of Castor, Pollux, and Mars this week. Saturn comes to opposition. And as spring begins, Sirius leaves the meridian behind. > read more




Tony Flanders
March 16, 2010 | On March 15th a distinguished panel discussed the future of human spaceflight at New York’s Hayden Planetarium. > read more


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