441–460 of 543 results


A Planetary System Out of Whack

The red giant star Kepler-56 spins on an axis offset by a bizarre 45 degrees from its transiting planets. The discovery of a third companion could explain why.


Fomalhaut Star System Actually a Triple

Turns out “the lonely star of autumn” has not just one, but two distant companions, making it one of the most widely separated systems known.

Celestial News & Events

The Quest for Zodiacal Light

The first half of October 2013 is a good chance for early risers to catch the zodiacal light, the faint eastern glow preceding dawn.

People, Places, and Events

Astronomer Seager Wins “Genius Grant”

Exoplanet hunter and S&T author Sara Seager is among 24 scientists and artists granted one of 2013’s prestigious MacArthur Fellowships, commonly known as the “genius grant.”

Solar System

Comet ISON to Fly By Mars

On October 1st, Comet ISON will pass closer to Mars than it ever will to Earth. The Red Planet’s rovers and orbiters are ready to send home postcards of the event.

Milky Way

New 3D Maps of Milky Way's Bulge

New 3D maps of the Milky Way's central bulge of stars show a distinctively peanut-like shape. The maps give clues about how our galaxy evolved to its present-day form.

Solar System

Glimpse Into Sun Befuddles Theorists

Scientists sneaked a peek into the Sun’s interior, but what they saw contradicts the assumptions made by models predicting solar activity.

Astronomy and Society

17-Day ALMA Strike Ends in Resolution

The 17-day strike at the world’s largest ground-based observatory ended Saturday, and ALMA's revolutionary observations of the millimeter/submillimeter sky restart today.

Professional Telescopes

Green Bank Telescope's $1,000,000 Boost

Threatened by NSF cuts, the Green Bank Telescope signed a deal with West Virginia University to receive $1 million over the next two years. But the radio antenna will need more than that to survive long-term.


Source Found for Magellanic Stream

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

Black Holes

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.

Astronomy and Society

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.