5221–5240 of 6,712 results

Celestial News & Events

Pleiades Occultation Observed

The occultation of the Pleiades by the crescent Moon on April 8th was plagued by haze in Boston, but magnificent nonetheless.

Infrared view into Pisces

Stellar Science

The First Type-Y Star?

It's the coolest brown dwarf yet, and it seems to be in a spectral class of its own.

Solar System

Phobos Gets a Close-up

The small army of spacecraft now operating on and around Mars don't spend all their time watching the Red Planet. Check out this just-released view of one of Mars's moons.

Celestial News & Events

Tour April's Sky — By Ear and Eye!

What better way to enjoy April's evening sky sights than to let Sky & Telescope take you on a guided tour?

Evening on April 8th

Celestial News & Events

A Perfect Pairing

If your evening sky is clear on Tuesday, April 8th, head out soon after sunset to catch a beautiful celestial scene.

Solar System

What's Inside Enceladus?

In a daring dash over the south pole of Enceladus, the Cassini orbiter found organic molecules gushing from icy fractures on the Saturnian moon's surface — and hints that a reservoir of liquid water might exist deeper down.

Exoplanets

A Raft of New Planets in Silhouette

The SuperWASP project finds 10 new extrasolar planets crossing the faces of their stars.

Celestial News & Events

Help Us Help You

Did you know that Venus is still visible in the morning sky in April 2008?

Celestial News & Events

Uranus and Neptune in 2008

Uranus and Neptune are easy to find with the aid of the charts in this article.

Celestial News & Events

Uranus and Neptune in 2009

Uranus and Neptune are easy to find with the aid of the charts in this article.

Astronomy and Society

Lights Out, Everyone!

It's National Dark-Sky Week, a time to take stock of how badly your nighttime environment has been overrun with poor-quality lighting — and a time to do something about it!

Celestial News & Events

Fun in the Sun Continues

Don't miss the evolving sunspots now crossing the solar disk.

New Product Showcase

Smooth Alt-AZ

Astronomy Technologies now offers the Astro-Tech Voyager altazimuth mount.

Astronomy & Observing News

NASA's Wine Sniffer

Scientists are using wine to help test a device designed to search for life on Mars.

Celestial News & Events

Go See the Sun

If you have a solar filter or another way to safely view the Sun, be sure to check out the latest group of sunspots marching across its disk.

Cosmology

A Record-Breaking Gamma-Ray Burst

The visible-light glow of a gamma-ray burst briefly shone at magnitude 5.4, despite its distance of 7.5 billion light-years — more than halfway across the visible universe.

Astronomy and Society

Notes from the Weekend

A site for streaming TV shows has an astronomical bonus. Plus, a couple of other things.

Solar System

Titan's Free-Floating Crust

Saturn's giant moon isn't spinning the way a well-behaved satellite should — and some scientists argue that this deviant behavior is due to a global ocean hidden beneath its icy crust.

Solar System

Comet Hale-Bopp Still Lives

It's nearly as far away as Neptune, but the frozen gas in the Great Comet of 1997 is still melting.

Astronomy & Observing News

STEREO: The Sun's Corona Unraveled in 3D

Twin spacecraft far apart are mapping loops of the solar corona in three dimensions. The shapes are not always turning out as expected.