Stefanie Waldek

The planets will begin closing in on one another ahead of a conjunction on Sunday (Jan. 22), during which they will appear just one-third of a degree apart.

The final project, which will be 1,000 times more powerful, will be used to help spot potentially hazardous objects flying toward Earth.

Researchers have discovered more than 200 RR Lyrae stars in our galaxy's stellar halo.

The institution's annual photography competition seeks to find "the most striking images of our cosmos."

Spread throughout the universe are rogue stars that remain gravitationally untethered to others, wandering endlessly in the vastness of space and creating a faint glow.

Pick up a pair of binoculars to examine the half-lit moon and Jupiter as it passes by.

We know very little about Mars rock glaciers, but scientists do suspect that they may hold significant amounts of water.

James Webb Space Telescope has just produced one of the most detailed photos of this wreath-shaped galaxy ever seen.

The Ursid meteor shower peaks tonight (Dec. 22 into the morning of Dec. 23), offering the last shooting stars of the year.

The winter solstice is today (Dec. 21), marking the official start of astronomical winter in the Northern Hemisphere and the shortest day of the year.

Tidal interactions are pulling the exoplanet toward its demise: a fiery collision with its star.

NASA has canceled the GeoCarb mission, which was a greenhouse gas–monitoring satellite into geostationary orbit.

Scientists reexamining the James Webb Space Telescope's iconic "Cosmic Cliffs" image of the star cluster NGC 3324, have spotted a rare sight: protostars emitting two dozen powerful jets and outflows.

The Geminid meteor shower will peak overnight tonight (Dec. 13 and Dec. 14), producing anywhere from 60 to 120 meteors per hour.

After eight years of science missions, the Stratospheric Observatory for Infrared Astronomy (SOFIA) aircraft has found permanent residence at the Pima Air & Space Museum in Arizona.

The super-Earth exoplanet Janssen is so close to its star, a year is only 18 hours long.

On Mars, dust devils can have both positive and negative impacts on robotic exploration on the planet.

ESO's Visible and Infrared Survey Telescope for Astronomy gives us a peek at the action inside the stellar nurseries.

NASA's Lunar Flashlight mission will deploy a small satellite to skim the moon's surface and use lasers to search for water ice in lunar craters.

Archival images from the Hubble Space Telescope have revealed an infant supernova photographed just hours after the star's explosion 11.5 billion years ago.

New research indicates that certain areas of the Martian crust have a higher silica content than expected, upending the long-held theory that the crust is uniformly basaltic.

Catch Saturn making a close approach of the moon in its first quarter phase on Tuesday (Nov. 1).

The boundary between the heliosphere and the interstellar medium appears to be moving in an unexpected manner.

A newly processed image, comprising 41 observations by NASA's retired Cassini mission, provides insights into the origins of Saturn's rings.

The Hubble Space Telescope observed the aftermath of astronomers' first-ever neutron star collision and measured how fast the jet produced traveled.