Join the world’s largest celebration of astronomy — in person or via online webcasts of events — throughout April.
Modern security threats have brought back an old method — celestial navigation — to help U.S. Navy sailors navigate the high seas.
What began as a student's simple idea a decade ago has grown into a worldwide celebration of the night sky and easy ways to reduce light pollution.
A burst pipe flooded Harvard College’s Observatory Hill, submerging thousands of historic photographic plates underwater. Recovery is now under way.
It's high time that we amateur astronomers got serious about protecting the night sky from light pollution.
A multi-year investigation revealed errors in our understanding of the Sun.
The U.S. Postal Service has unveiled new stamps, to be issued later this year, that feature 10 solar-system objects — including Pluto.
Following a wildly popular contest, the International Astronomical Union has named 14 stars and 31 planets that orbit them.
A new website shows how light pollution spreads around the globe — using data gathered by its users.
For the second time during his tenure, President Obama invited amateur astronomers to join him on the South Lawn for an evening of stargazing.
Geoffrey Marcy, a top figure in exoplanet discovery, sexually pressured and harassed students and researchers for at least a decade.
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.
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.