461–480 of 554 results


Source Found for Magellanic Stream

New observations solve the origins of a long rivulet of gas encircling the Milky Way.

Milky Way

New Pulsar Explores Heart of Milky Way

A pulsar discovered last April is helping astronomers measure the magnetic field surrounding our galaxy’s central black hole.


How ALMA Works Its Magic

ALMA (ESO/NAOJ/NRAO) / C. Malin In the November 2013 issue of S&T, I write about a revolutionary new telescope being built in the Chilean Atacama Desert. The Atacama Large Millimiter/submillimeter Array (ALMA) explores a little-known region of the electromagnetic spectrum, waves that are longer than the farthest infrared but shorter…

Astronomy & Observing News

Curiosity's Views of Gale Crater

Since its arrival in August 2012, NASA's newest robotic rover has been taking snapshots of the flat Martian plain on which it landed and the tantalizing topography that looms in the distance.

Professional Telescopes

Glimpse the X-ray Sky

Time and tide wait for no man. So the XMM-Newton space telescope is making every second count. As the telescope shifts its gaze from source to source, it's recording the X-ray sky.

Sunspot cycle

Stellar Science

The Weakest Solar Cycle in 100 Years

Scientists are struggling to explain the Sun’s bizarre recent behavior. Is it a fluke, or a sign of a deeper trend?

Professional Telescopes

Magnifying Quasars

Twinkle, twinkle, quasi-star: cosmic lenses could tell us what you are.

Stellar Science

The Chaotic Music of Variable Stars

Space-based observations of RR Lyrae variable stars, once considered the paragon of simplicity, are revealing turmoil in their daily vibrations.

People, Places, and Events

PayPal Stakes Its Claim in Space Tourism

A few years from now, when you’re floating in a space hotel many miles from Earth, you might want to order some coffee. And PayPal wants to make sure you don’t have to pay in cash.

Stellar Science

Was our Sun a Feisty Toddler?

Detailed observations of a young, nearby star are giving astronomers a chance to glimpse the Sun’s active youth.

Stellar Science

Weird Glitch in a Cosmic Clock

The sudden slowing of pulses coming from a spinning neutron star defy explanation — and might require a rethink of the universe’s most exotic denizens.

Stellar Science

Amateurs Monitor Controversial Variable Star

SS Cygni, one of the most-watched variable stars, lies at a distance that’s hotly disputed. The truth will determine whether we understand how these types of variables work.

Stellar Science

Digitizing Harvard’s Century of Sky

Harvard College Observatory is digitizing its famed collection of more than 500,000 glass sky-survey plates and has just released the first data set.

Black Holes

A Cosmic Sleight of Hand

Astronomers have been waiting for our galaxy’s slumbering supermassive black hole to stir for a snack. Instead, the universe handed them a different treat.


Almost Earth-like Exoplanets

NASA’s Kepler mission has discovered a 5-planet system that includes a hot Mars and four super-Earths, two of which might host liquid water. These aren’t quite the Earth-like exoplanets Kepler’s been looking for, but they’re close.

NorthEast Astronomy Forum in 2008

Astronomy & Observing News

Come to NEAF April 20-21

Make plans to attend the largest annual astronomy trade show in America: the Northeast Astronomy Forum & Telescope Show.

Black Holes

When Supergiants Explode

Astronomers have announced a new class of gamma-ray bursts, possibly created when some of the biggest stars in the universe go supernova.

New type of supernova

Stellar Science

A New Type of Supernova

Astronomers have discovered a new supernova class where the star might survive the explosion.

Black Holes

Black Hole Wakes for a Light Snack

Astronomers might have glimpsed a supermassive black hole snacking on a brown dwarf in a galaxy 47 million light-years away.

Stellar Science

Can Stars Form in our Galaxy's Center?

Observations of Milky Way’s chaotic center show hints of stars forming just two light-years away from our galaxy’s supermassive black hole.