When astronomers discovered the first objects orbiting between Mars and Jupiter, at first they didn't know what to call them. Today we know them as asteroids, and the creator of that term has finally been identified.
The world's news media are making a big deal about a largish near-Earth asteroid discovered on October 8th that has a very slim chance of striking Earth in 2032.
Astronomers Without Borders is raising funds to get 40,000 sets of eye-saving viewers into the hands of African schoolchildren for next month's solar eclipse.
Stargazers in Great Britain learned this week that their beloved broadcast about all things celestial, inaugurated by the late Patrick Moore in 1957, might be canceled at year's end.
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.
August's full Moon has come and gone. While it wasn't the second one occurring this month, it was a "Blue Moon" according to a definition dating to the 1930s.
The Astronomical League is tackling a serious threat to the future of organized amateur astronomy: a dearth of stargazers in their teens, 20s, and 30s.
July 19th was a Big Day for our home planet, as two spacecraft, Cassini and Messenger, took snapshots of Earth and Moon from great distances.
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.
The cosmic intruder that exploded in the sky on February 15th dropped thousands of fragments onto the snow-covered plains of south-central Russia. Here's an update on what's been found.
A recent annual meeting of amateur astronomers in Big Bear, California, proved once again that the amateur community is pursuing impressive science endeavors.
From the city lights nestled between Alpine peaks to a single image that captures stars, an aurora, and a meteor, The World At Night's 2013 astrophoto contest is full of startling vistas.
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.
Not content to let private companies have all the fun in asteroid exploration and exploitation, NASA managers have proposed a high-flying mission that would capture a small asteroid and dispatch astronauts to study it — all within the next decade.
A NASA web-based tool plots trajectories to your favorite planet or near-Earth object.
Still controversial, the annual switch to daylight saving time is annoying to backyard astronomers — and probably doesn't save any energy after all.
The fireball that exploded over Russia on February 15th left more than a million square feet of damaged windows, bringing home how fragile life on Earth can be. Here's what S&T's staff has managed to piece together about what happened.
Deep Space Industries, Inc, announced plans to send a fleet of asteroid-prospecting to target asteroids in 2015 — and that’s just the first step in their ambitious proposal.
Forty years after the last human visitors departed the Moon aboard Apollo 17, space historian Andrew Chaikin talks about why we should return.
The man who took humanity's first step on another world is no longer among us.
See through Curiosity's eyes as it descends to the surface of the Red Planet.
Sky & Telescope has released its new SkyWeek Plus app, which combines all the good stuff of our regular SkyWeek app with new reminder and breaking-sky-news features.
A California startup seeks to democratize space research by putting a tiny, custom-built satellite into orbit — and letting the public decide how to use it.
The American Medical Association has released a report detailing several possible health concerns related to nighttime light exposure. But some lighting researchers worry the conclusions are more alarmist than is warranted.
Astronomers warn that it's not a question of "if" Earth will be hit by an asteroid, but "when." If a private group of space veterans has its way, a Sun-orbiting spacecraft will find threatening objects decades before they can strike us.