5061–5080 of 6,713 results

Exoplanets

Another Direct Exoplanet Image

A tiny, glowing dot apparently orbits just inside the inner edge of the dusty debris disk surrounding the star Beta Pictoris, 64 light-years away.

Solar System

Chandrayaan 1 is a Hit

India's first deep-space mission has chalked up another success during the first days of its two-year mission: slamming an instrumented probe into the lunar surface.

Cosmology

New Eyes on the Cosmic-Ray Sky

High on the Argentinian pampa, 1,600 water-filled "eyes" await the arrival of the most powerful high-energy particles in the universe.

Celestial News & Events

Catch Venus with a "Moon"

On Monday, November 17th, Venus passes very close to the 2.8-magnitude star Lambda Sagittarii (Kaus Borealis). Through a telescope, Lambda appears next to Venus very much like one of the Galilean Moons next to Jupiter.

Exoplanets

First True Exoplanet Images…Probably

Although questions remain, it appears that astronomers have at last taken images of actual planets orbiting other stars.

Space Missions

Phoenix Chills Out, Mission Ends

As the Sun set slowly over the Martian polar plain, a dust storm robbed NASA's plucky lander of the sunlight it needed to operate.The craft's most recent and presumably final communication came on November 2nd.

Space Missions

Chandrayaan 1 in Lunar Orbit

So far, so good for India's first attempt to explore the Moon. Chandrayaan 1 is safely in lunar orbit after a two-week series of rocket burns.

Professional Telescopes

Telescope Mirrors from Antifreeze?

Buy a jug of ethylene glycol at the auto-supply store. Add iron-oxide powder and shake vigorously. Pour into a shallow pan, spray on a pinch of powdered silver, and turn on a magnetic field. Voilà! — instant mirror! Can it really be that easy? Not yet, but a promising new technology suggests that, someday, the answer might be "yes."

iPod

Celestial News & Events

Tour November's Sky! | November 6th, 2008

With the return of standard time in the Northern Hemisphere, evenings arrive much sooner than they did just a few weeks ago. That makes it a snap to get in some quick stargazing before dinnertime.

Solar System

Amazing Close-ups of Enceladus

Ever wonder what it'd be like to view the icy terrain of Saturn's enigmatically active moon as if you were just 12 miles above it? Now you can, thanks to Cassini's close brush with Enceladus on Halloween.

Space Missions

Hubble Returns to Work

After a month-long hiatus caused by an electronics failure, the Hubble Space Telescope has resumed its observations of the cosmos. But a final house call by Space Shuttle astronauts will have to wait until NASA engineers can round up some spare parts.

Solar System

Mercury Gets a Second Look

When NASA's Messenger spacecraft flew past the innermost planet on October 6th, it mapped another 30% of the surface never before viewed by spacecraft and gave scientists tantalizing hints of what Mercury is all about.

Celestial News & Events

View Vesta at Its Brightest

Vesta, the brightest asteroid, is easy to observe during the last three months of 2008.

Chandrayaan 1 in orbit

Space Missions

India's First Moon Shot

There's a new player in deep-space exploration, as India launches a highly instrumented spacecraft destined for lunar orbit.

Harsh lights in residential neighborhood

Astronomy and Society

Light Pollution in the Spotlight

A flurry of articles, editorials, and even Congressional briefings has provided much-needed momentum for the fight against astronomers' Public Enemy #1.

Celestial News & Events

Count the Stars to Save the Sky

Schoolchildren, families, and citizen scientists around the world will gaze skyward after dark from October 20th to November 3rd. The Great World Wide Star Count, now in its second year, helps scientists map light pollution globally while educating participants about the stars.

Space Missions

NASA Satellite Spots New Type of Pulsar

The Fermi Gamma-ray Space Telescope has made its first major discovery.

Astronomy and Society

Speaking of the VLT

Next month, James Bond heads to Chile's Very Large Telescope. That can't be good.

Solar System

Giant "Hurricanes" Ring Saturn's Poles

NASA scientists are scratching their heads over the monstrously large swirls revealed by the Cassini orbiter at the planet's top and bottom.

Professional Telescopes

Big Scope TV Alert!

The National Geographic Channel provides an up-close look at the Very Large Telescope.