SUNSET: 
Orbital Path Podcast: Making Gravitational Waves
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.
Why We Marched for Science
“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.
Astronomers March for Science
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: From Gravitational Waves to Space Dust
LISA Pathfinder, the technology testbed mission for a future gravitational-wave detector, turns out to be a surprisingly good micrometeoroid hunter.
Cosmic Lens Provides Unique View of Supernova
Astronomers have discovered a gravitationally lensed Type Ia supernova that will soon give them a new measure of the universe’s expansion.
Welcome to LHS 1140b: A Super-Earth in the Habitable Zone
The MEarth exoplanet survey nabs LHS 1140 b, a rocky planet transiting its host star just 41 light-years distant.
Lyrids to Put on a Weekend Light Show
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.
Watch Milky Way’s Stars Move 5 Million Years into the Future
Astronomers have transformed star data from the Gaia and Hipparcos missions into a video that predicts stellar motions millions of years from now.
Enceladus: Hydrothermal Heating Confirmed
Astronomers have more evidence that the hidden ocean inside Saturn’s moon Enceladus is heated by hydrothermal activity.
See a Potentially Hazardous Asteroid From Your Backyard
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…
Sun Triggers Ceres’ Fleeting Atmosphere
Planetary scientists think the Sun may inadvertently create a transitory, tenuous atmosphere around the dwarf planet Ceres — and in an unexpected way.
News and Views from NEAF 2017
Our editors have just returned from the Northeast Astronomy Forum (NEAF), the world's largest astronomy and space tradeshow.
ALMA Captures Stellar Fireworks in Orion
Stellar fireworks are what remains of a centuries-old explosion, the concussive consequence of four stars that came together in a gravitational tussle.
Gravitational Waves Dethrone Supermassive Black Hole
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.
Comet PanSTARRS (C/2015 ER61) in Outburst and Binocular Bright
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!
Cassini's Grand Finale Orbits Set to Begin
NASA's Cassini mission nears its final act — the spacecraft will enter the first of its Grand Finale Orbits later this month.
Tour April's Sky: Critters on the March
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.
Mars Lost Atmosphere to Space
NASA’s MAVEN mission has confirmed that the solar wind stripped the Red Planet of its atmosphere.
Comet Lovejoy Brightens Quickly, Heads North
Terry Lovejoy's new comet has gone from faint to bright in just three weeks and is now a tempting binocular target at dawn.
Rosetta Sees Changing Face of Comet 67P
Data from the Rosetta mission has linked outbursts on Comet 67P/Churyumov-Gerasimenko with dramatic changes on the comet's surface.
