Astronomers studying the infrared glow that pervades the universe have pinned down its source: dusty, faint, and faraway galaxies.
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.
By tracking deviations in spacecraft orbits, planetary scientists have created a high-resolution map of the Red Planet's gravitational pull.
Astronomers have identified 53 “super spirals” — spiral galaxies that are huge and incredibly luminous — as part of a project exploring archived observations.
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.
The motions of thirteen stars in our galaxy’s halo outline a shell-like structure, perhaps the remains of an ancient galactic collision.
Skygazers thronged to Indonesia hoping to see a total solar eclipse — and most were rewarded with breathtaking views of the event.
On the morning of Wednesday, March 9th, 240 members of a Sky & Telescope cruise were treated to a spectacular total solar eclipse.
A burst pipe flooded Harvard College’s Observatory Hill, submerging thousands of historic photographic plates underwater. Recovery is now under way.
An innovative CubeSat mission, slated to take to space this year, will demonstrate the feasibility of free-flying satellites.
Professional and amateur astronomers working together have found a young exoplanet in the Hyades star cluster. The planet is weirdly large, given its host star.
It's high time that we amateur astronomers got serious about protecting the night sky from light pollution.
On March 9th — late on Tuesday, March 8th, in the U.S. — the Moon will completely cover the Sun. Check here for the links you'll need to see this celestial spectacle as it happens.
Astronomers using the Hubble Space Telescope have measured a precise distance to a galaxy dwelling in the cosmic dawn.
A brief burst of radio waves has been observed repeating, enabling astronomers to settle its exotic origin.
A stunning submillimeter mosaic of the Milky Way Galaxy captures a portrait of the cold dust and gas swirling along the galactic plane.
After months of excitement in the predawn sky, the action is shifting to the evening — where Jupiter rises early and the stars of Orion anchor an array of celestial sights.
On March 9th, a total solar eclipse will cross parts of Sumatra, Borneo, Sulawesi, and the Pacific. Use our map to find out what you'll see at any location.
New observations from the Hubble Space Telescope are helping characterize the atmospheres of exotic planets such as 55 Cancri e.
A radio burst with the energy of a hundred million Suns has finally been placed on the cosmic map, enabling scientists to investigate the origin of these mysterious bursts.
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.
Among its other geologic oddities, Pluto has clusters of hills floating in a frozen "sea" dominated by nitrogen ice. These bobbing bumps might hold clues to the plain's depth and evolution.
A multi-year investigation revealed errors in our understanding of the Sun.