Antares and Betelgeuse may be colossal stars, but we take it to the next level of stellar monstrosity with a visit to UY Scuti, a star that makes our Sun seem no bigger than a pinpoint.
The orbiting science laboratory begins a series of marathon passes this week that favor the northern hemisphere.
Let Mars be your guide to no fewer than 15 diverse and delightful double stars that pepper its path through Scorpius and Libra this opposition season.
The European Space Agency is opting to send its first rover to the Red Planet two years later than originally planned.
An old friend from winter returns for an encore in the morning sky. Already visible in binoculars, Comet PanSTARRS (C/2013 X1) may reach naked-eye visibility in June.
Mind your elders the next clear night and pay a visit to some of Spring's biggest and most ancient planetary nebulae.
Russia's Mikhailo Lomonosov observatory takes to the skies on the hunt for gamma-ray bursts, cosmic rays, and near-Earth asteroids.
Planning a sidewalk stargazing event? Here are a few suggestions to make sure people walk away smiling.
The Japanese space agency JAXA has released a timeline covering the Hitomi space observatory's failure last month. Salvage efforts continue but recovery appears unlikely.
The recurrent nova T Coronae Borealis last made a splash just after World War II. Does its current restive state hint at an imminent outburst?
With astronomy being celebrated around the globe this month, join the fun by participating in a unique lunar observing challenge: track down 20 features once thought to show evidence of change from weather, geology, and even life.
With the Moon finally put to bed and Comet 252P still bright, there's no better time than now to see it. Nearby Mars and Saturn only sweeten the deal.
Modern security threats have brought back an old method — celestial navigation — to help U.S. Navy sailors navigate the high seas.
Hidden within the subtle hues of the stars are the keys to their temperatures and compositions. Get acquainted with the classic OBAFGKM spectral sequence through real stars you can see on a spring night.
Ground controllers are scrambling to recover the Hitomi satellite from a mysterious 'debris anomaly' over the past weekend.
Splintered comet duo 252P/LINEAR and P/2016 BA14 liven up both dusk and dawn this week. Naked-eye 252P finally debuts in northern skies, while BA14 makes a beeline through the Big Dipper.
Not one, but two, possibly related comets will make exceptionally close flybys of Earth on March 21–22. Here's what we know and a guide on how to see them.
The launch of ESA's ExoMars Trace Gas Orbiter and Schiaparelli lander heralds a new phase of Mars exploration.
Baptized in the fire of yesterday's total solar eclipse, a very young crescent Moon emerges into the night sky.
An innovative CubeSat mission, slated to take to space this year, will demonstrate the feasibility of free-flying satellites.
Spiraling stars and light-soaking dust clouds enliven the heart of this lesser-known planetary nebula NGC 2346 in Monoceros. Will you be the first to catch it playing peekaboo again?
We need to learn how to talk about possible signs of extraterrestrial intelligence.
The lure of dark skies often takes us to unfamiliar places where nocturnal animals and encounters with strangers can ignite our primal fears.
NASA is commencing work on the Wide Field Infrared Survey Telescope (WFIRST), the successor to the Hubble and the James Webb Space Telescopes.
Japan’s newest X-ray satellite, Hitomi (formerly Astro-H), promises to reveal the hot and hidden universe.