Cassini's Grand Finale has begun, as the spacecraft threaded the needle between Saturn and its rings, following several fantastic moon passes and a final glance back at Earth.
Amateur astronomy clubs, planetariums, science museums, and parks celebrate Astronomy Day twice a year, when the public is invited to come learn about the sky and view through telescopes.
The U.S. Postal Service's new Total Eclipse Forever stamp will feature photos by the well-know eclipse expert Fred Espenak, who is also a master of many different kinds of astrophotography.
The universe sings to us in gravitational waves, and we're starting to listen. Michelle Thaller discusses the discovery of gravitational waves and their unusual effects in her latest astronomy podcast.
“OBJECTIVE REALITY EXISTS.” It was a protest sign that I never imagined I would carry on a crowded all-night bus to a march for science in Washington, DC.
Participants at April 22nd's March for Science tell us about their experience in promoting science, the scientific process, and the role of science in shaping policy.
LISA Pathfinder, the technology testbed mission for a future gravitational-wave detector, turns out to be a surprisingly good micrometeoroid hunter.
Astronomers have discovered a gravitationally lensed Type Ia supernova that will soon give them a new measure of the universe’s expansion.
As August 21st's awesome solar eclipse draws nearer, it's a great time to get valuable basic tips on how to photograph this spectacle — even with your smartphone — from Fred Espenak, a.k.a. "Mr. Eclipse," during S&T's live webinar on Tuesday, April 25th.
The MEarth exoplanet survey nabs LHS 1140 b, a rocky planet transiting its host star just 41 light-years distant.
The annual Lyrid meteor shower will add some pop and sizzle to Saturday's pre-dawn sky. With little interference from the Moon, conditions are ideal for meteor watching.
Astronomers have transformed star data from the Gaia and Hipparcos missions into a video that predicts stellar motions millions of years from now.
Astronomers have more evidence that the hidden ocean inside Saturn’s moon Enceladus is heated by hydrothermal activity.
Get ready for 2014 JO25, the biggest asteroid to fly this close to Earth since 2004. Good news — even a 3-inch telescope will show it! Update: See below for a radar image and animation of 2014 JO25 captured by NASA's Goldstone Solar System Radar on April 18, 2017. Every week, a handful of new Earth-approaching asteroids…
Planetary scientists think the Sun may inadvertently create a transitory, tenuous atmosphere around the dwarf planet Ceres — and in an unexpected way.
Our editors have just returned from the Northeast Astronomy Forum (NEAF), the world's largest astronomy and space tradeshow.
Stellar fireworks are what remains of a centuries-old explosion, the concussive consequence of four stars that came together in a gravitational tussle.
Astronomers have discovered a supermassive black hole not sitting in its customary seat at the center of its galaxy. Gravitational waves from a recent merger may have ejected the black hole.
Dawn comet C/2015 ER61 PanSTARRS just underwent a bright outburst and is now an easy binocular object. Take a look before the Moon returns!
NASA's Cassini mission nears its final act — the spacecraft will enter the first of its Grand Finale Orbits later this month.
As you'll hear in this month's podcast, April is a time when it's easy to spot a lion, a sea serpent, and two bears in the evening sky.
NASA’s MAVEN mission has confirmed that the solar wind stripped the Red Planet of its atmosphere.
Terry Lovejoy's new comet has gone from faint to bright in just three weeks and is now a tempting binocular target at dawn.
Data from the Rosetta mission has linked outbursts on Comet 67P/Churyumov-Gerasimenko with dramatic changes on the comet's surface.
Astronomers have found newborn stars in gas pouring out of a galactic nucleus.