Prepare to Be Blown Away by Iapetus
Cassini finally encounters Saturn's wacky moon Iapetus today. Don't wait for the processed pics to be released. Check out the raw images now!
Surprise Outburst of a New Dwarf Nova
A suspected dwarf nova is undergoing its first observed outburst and had reached 9th magnitude as of September 5, 2007. More observations are needed.
Great Offer, Great Cause
Until November 1st, astronomy-club members can join the International Dark-Sky Association and help fight light pollution for about the cost of a large, three-topping pizza — and the IDA is better for you!
The Source of the Dinosaurs' Asteroid
Did a colossal collision in the asteroid belt 160 million years ago doom the dinosaurs? A just-published analysis argues strongly for exactly that.
Aurigids Aplenty!
Just as predicted, the Aurigid shower delivered a burst of meteors created by particles shed by a comet more than 2,000 years ago.
Measuring Neutron Stars Exactly
Astronomers can measure a neutron star's diameter by effects of gas skimming around its surface at 40% of light speed.
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.
The Sun Shakes the Earth
A team of scientists makes a compelling case that sound waves rattling around inside the Sun are literally shaking Earth's interior.
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.