801–820 of 859 results

Solar System

Earth's Magnetosphere: On the Ropes

A constellation of five identical orbiting probes has detected skirmishes with the solar wind along Earth's magnetospheric front lines.

Solar System

Deep Impact's New Assignments

Put to sleep after its smash success in 2005, one of NASA's interplanetary craft is getting a chance to search for extrasolar Earths and to visit a second comet.

Solar System

Saturn's Sci-Fi Moons

Just when you thought you'd seen everything the ringed planet has to offer, the Cassini orbiter glimpses bizarre little moons shaped like flying saucers.

Solar System

My Kind of Beauty Contest!

What's the most beautiful image taken by the Cassini spacecraft since it arrived at Saturn? Vote for your favorite today!

Spacecraft and Space Missions

Lightning on Venus

The world next door seemed hellish enough with an atmosphere 90 times the sea-level pressure on Earth and surface temperature of 900°. Now, scientists say, there's lots of lightning — and what little water it has seems to be escaping to space.

Celestial News & Events

Call for Images of Venus

Venus Express project scientists are inviting amateur and professional astronomers to contribute Earth-based images of the planet made at infrared, visible, and ultraviolet wavelengths.

False

Solar System

Meteor Showers on Mars

Scientists now know what meteor showers occur in the rarefied atmosphere above Mars. So how come NASA's intrepid rovers can't see them?

Solar System

Automated Lunar Impacts

NASA is watching the Moon to see how often it gets hit by meteoroids.

Solar System

Pluto's New Family Portrait

Years of painstaking observation with some of the world's most powerful telescopes are finally showing us a glimpse of what awaits New Horizons when it reaches Pluto in 2015.

Solar System

Titan's Frigid Shores

NASA's Cassini orbiter continues mapping Saturn's largest moon — and finding prime lakefront real estate.

Solar System

Two Planets, One Discovery

Talk about serendipity! Two teams of scientists on opposite sides of the Atlantic, studying two planets on opposite sides of Earth, come up with the same quirky result.

Solar System

Spotlight on New Horizons

Jupiter looks great through a backyard telescope, but can you imagine how much better it'd look from just 1.4 million miles away? NASA's Pluto-bound spacecraft got that chance last February.

Solar System

Iapetus Yields Dark Secrets

Saturn's black-and-white moon has mystified astronomers for centuries. Finally, however, they're learning what a bizarre place it truly is.

Solar System

Imaging Mercury

A team of astronomers have found new features on the innermost planet using an approach familiar to many amateur astronomers.

Solar System

Kaguya: To the Moon!

With a brief rocket firing on October 4th, the Japanese spacecraft Kaguya slipped into lunar orbit — the first step in what promises to be an exciting scientific mission.

Solar System

Sun 1, Comet Tail 0

A solar explosion plows into a comet's tail. Care to place a wager on which one wins?

Solar System

Uranian Moons Transit Tonight

This evening, if you've got a good planetary imaging setup, see if you can rcord the shadows of Titania and Ariel as they drift across the cloud tops of Uranus.

Solar System

Skylights into Martian Caves

NASA's Mars Odyssey orbiter may have found deep black pits — possibly sinkholes — that act as skylights for extensive caves on the slopes of the volcano Arsia Mons.

Dawn

Solar System

Dawn Heads to Vesta (Finally!)

After many delays (and near termination), NASA's ambitious asteroid mission is finally under way following a picture-perfect launch on Thursday.

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.

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