821–840 of 860 results

Solar System

A Hot New Comet

The Solar and Heliospheric Observatory has 1,350 comet discoveries to its credit. But only one of them has been a repeat visitor.

Solar System

Neptune's "Warm" Pole

The big blue planet's south pole is warmer than everywhere else, and that might be triggering Neptune's strong winds.

Spacecraft and Space Missions

Close-up on Iapetus

NASA's Cassini spacecraft zoomed in to take detailed pictures and other measurements of one of Saturn's weirdest moons.

Solar System

Japan Launches a "Lunar Princess"

On September 14th, during a picture-perfect launch, a powerful rocket heaved Japan's latest scientific satellite toward the Moon.

Solar System

Opportunity is Going In

Now that the dust storms have passed, the Mars Exploration Rover Opportunity should begin studies inside Victoria Crater in the coming weeks.

Spacecraft and Space Missions

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!

Astronomy and Society

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.

Solar System

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.

Solar System

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.

Solar System

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.

Solar System

Rings of Uranus on Edge

For the first time since the rings of Uranus were discovered, astronomers are studying their edge-on view.

Solar System

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.

Spacecraft and Space Missions

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.

Solar System

One Less "Possibility of Life"?

Just because Saturn's moon Enceladus has active geysers doesn't mean it harbors alien life. That's the take-home message from an upcoming scientific paper.

Solar System

Risky Business

Two American collectors manage — barely — to get in and out of Colombia with fragments from a fresh meteorite fall.

Solar System

Do Sunspots Forecast the Rain?

A team of researchers claim that sunspot activity might accurately forecast rain in Africa.

Solar System

Do Sunspots Cycles Forecast the Rain?

A team of researchers claim that sunspot activity might accurately forecast rain in Africa.

Solar System

Phoenix Heads to Mars

Rising from the ashes of a mission to Mars that disappeared without a trace in 1999, the Phoenix spacecraft is on its way to the Red Planet.

Solar System

Understanding Saturn's G Ring

Astronomers might have found the source for Saturn's mysterious G ring.

Pro-Am Collaboration

Comet Discoverers Awarded

This year's Edgar Wilson Award went to three unique amateur comet discoverers.

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