Stefanie Waldek

The comet C/2022 A2 (Pan-STARRS) will reach perihelion, or the closest point to the sun in its orbit, on Saturday, Feb. 18. The comet will be visible from Earth at dawn and dusk.

The newfound exoplanet K2-415b is not within the habitable zone of its red dwarf host star, but it could have a neighbor that is.

Tonight the moon will reach its third-quarter phase, the last phase in the moon's monthly four-phase cycle. It will continue to wane until the new moon on Feb. 20.

We know precious little about how Mars got its atmosphere or how it disappeared. Now, thanks to some rocks from Duluth, Minnesota, scientists have a new theory.

Combining X-ray, radio, optical and infrared wavelengths, astronomers have imaged the messy collision of three galactic clusters leading to the formation of Abell 2256.

On Monday (Jan. 30), the moon will pass in front of Mars from the perspective of Earth in what's known as an occultation. The moon and Mars will also reach conjunction and appulse.

On Saturday, Jan. 28, skywatchers will be able to see the year's 1st first quarter moon, when the moon appears to be half-lit from the perspective of Earth.

Mercury will reach its highest altitude of its Jan.–Feb. 2023 morning apparition on Tuesday, Jan. 24. From New York City, it will reach 14 degrees above the horizon in the southeast sky.

Researchers can use vortices in protoplanetary disks to weigh and date exoplanets.

The new moon on Saturday (Jan. 21) is the closest new moon in 992 years at just 221,561 miles (356,568 km) away, but you won't be able to see anything from Earth.

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.