2841–2860 of 6,715 results
Pluto's Sputnik Planum in color

Astrobiology

Top 12 Astronomy News Stories of 2016

From the discovery of gravitational waves to the building evidence that a massive planet could exist beyond Pluto, it has been a thrilling year for astronomy research. We recap.

Venus, Mars, and the Moon in January 2017

Celestial News & Events

Tour January's Sky: Spot Two Star Clusters

Download our monthly astronomy podcast to spot Venus and Mars in the west — and two star clusters high up — after sunset.

Students watching a solar eclipse

Astronomy and Society

Get Funds for 2017 Eclipse Outreach Projects

Thanks to some timely NSF support, the American Astronomical Society is offering dozens of small grants to U.S. groups that offer outreach programs tied to the 2017 s

Clock

Astronomy and Society

The Year 2016 Will Be One Second Longer

Do you think 2016 has seemed unusually long? An international agency has decided to make it even longer.

Viewing the Quadrantid meteor shower

Celestial News & Events

Catch the Quadrantid Meteors (If You Can)

The Quadrantids, one of the year's best meteor showers, peaks on the morning of January 3rd, is. But be ready for it — most of the action takes place over just a few hours.

New Year's Revelers Passing in the Night

Celestial News & Events

Mars Meets Neptune on New Year's Eve

Doing anything on New Year's Eve? Before you start toasting, don't miss an exceptionally close conjunction of Mars and Neptune.

Vera Rubin in 1965

Astronomy and Society

Vera Rubin, “Mother of Dark Matter” (1928–2016)

Astronomer Vera Rubin, known for her revolutionary work confirming the existence of dark matter, died on December 25th. She was 88.

Sky & Telescope's Pluto globe

Solar System

Sky & Telescope's Pluto Globe is Here!

This beautifully detailed 6-inch globe lets you explore the amazing geology revealed by New Horizons during its historic 2015 flyby.

You may need sunglasses for these rays

Celestial News & Events

What to See with Your New Telescope During 2016 Holidays

Maybe this gift-giving season you got a shiny new telescope to call your own. Congratulations — you could be on your way to discovering many amazing far things in the night sky. Although most of them are so far and faint that just finding and detecting them is the challenge!…

Bubble around Betelgeuse

Stellar Science

Did Betelgeuse Swallow Its Companion?

The red supergiant marking Orion's shoulder seems to be spinning too fast. Did it get a boost when merged with a smaller companion star 100,000 years ago?

Water on Vesta and Ceres

Solar System

Dawn Result: Water is Everywhere on Ceres

New results from NASA's Dawn orbiter show that the largest asteroid (and acknowledged dwarf planet) must possess a global layer of water ice that lies just below its dark, dusty surface.

Radiant of the Ursid meteor shower

Celestial News & Events

Can You Spot December's Ursid Meteors?

Try your hand at observing the handful of "shooting stars" delivered by this little-known annual meteor shower.

Tangled dust filaments around NGC 4696

Galaxies

Hubble Images Tangled Web in Nearby Galaxy

A Hubble image of a nearby, massive elliptical galaxy reveals tenuous filaments that appear to be connected to the growth of the galaxy's supermassive black hole.

Telescope in a store

Telescopes: Guides & Recommendations

How to Choose Your First Telescope

Here's a quick guide to the essential features that you should look for when buying your first telescope.

Curiosity on Mars cartoon

Astrobiology

Curiosity Tracks Mars’s Ancient Habitability

Curiosity scientists have tracked Gale Crater’s changing environment as it became more, then less, acidic over millions of years. Microbial life could have survived in these conditions.

Phobos, by ExoMars CASSIS instrument

Solar System

ExoMars Trace Gas Orbiter Gets to Work

Welcome to Mars: the European Space Agency's ExoMars Trace Gas Orbiter sets up shop around the Red Planet.

Spinning black hole tidal disruption event

Black Holes

"Brightest Supernova Ever" or Shredded Star?

An incredible blaze of light discovered more than a year ago still has astronomers baffled as to its cause - and the answer may be contrary to recent headlines.

H-IIB rocket

Celestial News & Events

Watch Resupply Mission Chase Down the International Space Station

Find out how to see a cargo mission headed to the International Space Station this weekend.

Orion StarBlast 4.5 in a library

Astronomy and Society

"Library Telescope" Program Takes Off

From humble beginnings in 2008, a simple idea — equipping libraries with loaner telescopes — has caught on across the United States.

Space Missions

The Passing of John Glenn

John Glenn, the first American to orbit Earth, dies at 95.