Researchers on the ground have combed through a trove of images taken by orbiting astronauts to reveal unprecedented details about light pollution streaming from Earth's major cities.
A $100 million donation will radically speed up the search for artificial signals from the nearest million stars — and from trillions of much farther stars in the 100 nearest galaxies.
Clashes over building the premier telescope in the Northern Hemisphere and preserving Mauna Kea as a sacred site have intensified.
On December 5th, NASA successfully launched the first test flight of its Orion capsule. Scheduled to carry astronauts beyond low-Earth orbit in the 2020s, the spacecraft is NASA’s first deep-space people transporter since the Apollo days.
Officials proceeded with groundbreaking ceremonies for the world's largest optical telescope on October 7th amid protests from native Hawaiians who oppose it.
NASA’s Night Sky Network is conducting a new survey in order to better help the amateur astronomy community.
Now in its 15th year, the Edgar Wilson Award recognizes comet discoveries made by amateur observers. The 2013 awards honor seven dedicated individuals who scan the skies.
In 2002, high-school student Jennifer Barlow had a simple idea: let's take some time to appreciate the beauty of the cosmos and consider ways to reduce the spread of light pollution. Here's how you can join the celebration! Have you ever stepped outside to take in a view of the starry sky overhead —...
There was widespread hope that thousands of skywatchers would see the bright star Regulus briefly occulted by an asteroid early on March 20th. In the end, likely <u>no one</u> saw it. Here's why.
A big-budget television series about astronomy — a much-anticipated sequel to the iconic 1980 original — debuts this weekend in 174 countries and 47 languages.
Here’s what you need to know about a new fundraising venture, the race to name 500,000 craters on Uwingu’s Mars map.
Let's commit to stopping the spread of light pollution, the single greatest threat to our enjoyment of the night sky.
Explore a supernova remnant with this fun interactive simulation, created from detailed space- and ground-based observations in multiple wavelengths.
The mega-meteor that exploded over Russia last February has provided impact specialists with some surprising — and sobering — revelations.
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.