1161–1180 of 1,203 results

Astronomy & Observing News

Far-Flung Planetoid Shatters Distance Record

The discovery of an ice world more than twice as far from the Sun as Pluto may change thinking about how the solar system formed.

Astronomy & Observing News

Whirlwind Weekend of Irish Astronomy

In late September skygazers from across Ireland and the United Kingdom flocked to the 18th-annual Whirlpool Star Party.

Astronomy & Observing News

Downpours on Ancient Mars?

A new computer model suggests that ancient Mars may have been deluged with rain following every major cratering event.

Astronomy & Observing News

Mars Meets the Moon

Although lunar occultations of Mars aren't rare, the red planet loomed large during the dramatic meeting on July 17th.

Astronomy & Observing News

Small Asteroids = Small Threat?

Two researchers argue that stony asteroids fall apart much easier when they slam into Earth's atmosphere — and thus are far less destructive — than previously thought.

Astronomy & Observing News

Nozomi (Finally) Heads for Mars

Japan's first-ever planetary spacecraft should reach Mars in mid-December &$151; but will it be functioning when it gets there?

Astronomy & Observing News

Neptune's Forecast: A Cloudy Summer

Although sunlight barely warms distant Neptune, bright clouds are building in the planet's sunny southern hemisphere.

Astronomy & Observing News

NASA Sets Its Sites on Mars

With a mass of roughly 180 kilograms, NASA's Mars Exploration Rovers will be able to trek up to 100 meters per day during their three-month explorations. Each lander carries a suite of five instruments, collectively called Athena, and an abrasion tool for exposing fresh surfaces on rock faces.Courtesy NASA/JPL. After…

Astronomy & Observing News

Too Few Lunar Meteorites

We find as many chunks of Mars lying on Earth as chunks of the Moon — even though the Moon is closer and loses pieces more easily. Something is amiss.

Astronomy & Observing News

Jupiter's Weather Gets Clearer

During its flyby of Jupiter, the Cassini spacecraft found that Jupiter's weather is far more complex than previously thought.

Astronomy & Observing News

Lunar Flash Doesn't Pan Out

A fresh-looking crater on the Moon seemed to confirm that a bright "impact" on the Moon was seen firsthand in 1953 — but new evidence proves otherwise.

Astronomy & Observing News Polar-Ice Puzzle", "bookmark_label" : "Clicked on Solving Mars's
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Solving Mars's
Polar-Ice Puzzle

Although scientists have long suspected that the south polar cap of Mars was a giant reservoir of water ice, they've only recently had the evidence to prove it.

Astronomy & Observing News

Titan's "Great Lakes"

Recent radar probings reveal that much of Titan's southern hemisphere is covered by large bodies of liquid ethane and methane.

Astronomy & Observing News

Aussie Fires Destroy Mount Stromlo Observatory

One of Australia's premier astronomy facilities has been virtually wiped out by the worst wildfires in Australian history.

Astronomy & Observing News

Io's Salty Secret

Volcanic activity on the Jovian moon Io stains the surface with red and yellow allotropes of sulfur. Recent observations show that the moon's frequent outpourings are seasoned with a little salt.Courtesy University of Arizona and NASA. It might not seem surprising that Io, the Jovian moon famous for its vigorous…

Astronomy & Observing News

Storm Clouds on Titan

New infrared views of Saturn's biggest moon reveal towering, fast-moving storms in a murky, methane-laced atmosphere.

Astronomy & Observing News

Martian Meteorites Made Easy

New simulations show that impacts on Mars should be blasting chunks of the Planet out into space — and eventually onto Earth — about once every 200,000 years.

Astronomy & Observing News

Why Is Saturn Tipsy?

Astronomers now believe a long-distance relationship with Neptune has pushed Saturn's spin axis off to one side.

Astronomy & Observing News

Pluto's Warming Wisps

Pluto seems to be getting warmer, despite moving away from the Sun.

Astronomy & Observing News

Threatening Asteroids: Fewer Hits in our Future?

New studys suggest that asteroid impacts on Earth are more rare than preciously believed.

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