SUNSET: 
The Sun's Hot Corona: Mystery Deepens
Why is the Sun's atmosphere so hot? Physicists thought they knew the answer — powerful waves of energy moving up from the solar surface — but now they're not so sure.
Listen to Our September Podcast
This month's podcast explores how there still plenty of summer's stars to view even as we transition to autumn.
A Starry Chemical Imbalance
New high-resolution images of dwarf galaxy IC 10 in Cassiopeia may help resolve an enduring mystery about this star-forming powerhouse.
High (School) Honors
The Astronomical League has presented its National Young Astronomer and Jack Horkheimer awards for 2007.
A Whole Lotta Nothing
If you're looking for a place to really get away from it all, head toward a lovely spot in southeastern Eridanus.
Vesta Visits Jupiter
The brightest asteroid swings by the King of Planets from August 28th to the 31st.
Mars Rovers Rolling Again!
Predictions that the twin Martian explorers wouldn't survive the dust storm thankfully proved to be wrong. Spirit and Opportunity are back in business.
A Particularly Dark Full Moon
Tuesday morning's total lunar eclipse made for a stunningly dark, beautiful sight.
Map the Moon During Tomorrow's Lunar Eclipse
Please help us accurately map the edge of the Moon by timing occultations of stars during the August 28, 2007, total lunar eclipse.
Whole Lot of Nothing
A billion light-year-wide "hole" in space is a very cold and empty place.
Rings of Uranus on Edge
For the first time since the rings of Uranus were discovered, astronomers are studying their edge-on view.
Earth To Hit Aurigid Meteors
Western skywatchers are hoping to see a display of bright meteors on the morning of September 1st, as the Aurigid meteor shower is predicted to make a strong but brief showing.
Icy Shower Poses No Threat for Cassini
Scientists are confident that the towering ice geysers on Saturn's moon Enceladus shouldn't harm the Cassini spacecraft during a close flyby next March.
Thirty Meter Telescope Moves Forward
Big telescopes cost big money. So it's a good thing that the world has some wealthy folks willing to help make big astronomy happen.
Lunar Eclipse on August 28th
Catch the Moon in eclipse before sunrise on August 28th.
Opportunity to Confirm an Asteroid's Moon
On Tuesday morning, August 21, 2007, observers across much of North America should watch for a possible occultation by asteroid 146 Lucina's satellite.
Voyager 2's Lucky Day
Thirty years ago, on August 20, 1977, Voyager 2 left Earth and began its conquest of the outer solar system. Had it not been for the luck of the draw, this historic mission would have turned out very differently.
"Magnificent" Neutron Star Found
Sizzling with X-rays but mum at radio frequencies, a nearby, on-its-own neutron star is causing astronomers to scratch their heads.
