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An image taken by the Dark Energy Survey shows Comet Bernardinelli-Bernstein in October 2017.

The 'megacomet' Bernardinelli-Bernstein is the find of a decade. Here's the discovery explained.

By Meghan Bartels published

The scientists that found Comet Bernardinelli-Bernstein are an unlikely pair.

Comets
This artist's illustration shows the distant Comet Bernardinelli-Bernstein as it might look in the outer Solar System. Comet Bernardinelli-Bernstein is estimated to be about 1000 times more massive than a typical comet, making it arguably the largest comet discovered in modern times. It has an extremely elongated orbit, journeying inward from the distant Oort Cloud over millions of years. It is the most distant comet to be discovered on its incoming path.

Interstellar comets visit our solar system more frequently than thought

By Tereza Pultarova published

Comets from other star systems, such as 2019 Borisov, visit the sun's neighborhood more frequently than scientists had thought, a new study suggests.

Comets
This artist's illustration shows the distant Comet Bernardinelli-Bernstein as it might look in the outer Solar System. Comet Bernardinelli-Bernstein is estimated to be about 1000 times more massive than a typical comet, making it arguably the largest comet discovered in modern times. It has an extremely elongated orbit, journeying inward from the distant Oort Cloud over millions of years. It is the most distant comet to be discovered on its incoming path.

Newly found mega comet may be the largest seen in recorded history

By Elizabeth Howell published

A giant comet found far out in the solar system may be 1,000 times more massive than a typical comet, making it potentially the largest ever found in modern times.

Comets
This archaeological site in Arizona in the U.S. shows evidence of an impact from a comet.

Did a comet strike 13,000 years ago change human civilization as we know it?

By Chelsea Gohd published

Could a devastating comet impact in Earth's distant past have forever changed human civilization?

Comets
The Bernardinelli-Bernstein comet takes 5.5 million years to complete its orbit.

Never-before-seen colossal comet on a trek toward the sun

By Stephanie Pappas published

Only one week after astronomers noticed a moving object in the sky, they've identified it as a long-periodicity comet from the Oort Cloud.

Comets
An artist's impression of what the surface of the interstellar comet 2I/Borisov might look like.

Interstellar interloper 2I/Borisov may be the most pristine comet ever observed

By Charles Q. Choi published

The first known interstellar comet to visit our solar system may be the most pristine ever found, never passing near a star until visiting our own, researchers say.

Comets
This series of images of Comet 67P/Churyumov-Gerasimenko was captured by the Rosetta spacecraft's OSIRIS narrow-angle camera on Aug. 12, 2015, a few hours before the comet reached perihelion, or the closest point to the sun along its 6.5-year orbit.

The 'rubber ducky' comet is glowing

By Rafi Letzter published

The rubber ducky comet is glowing, but you can't see it. New analysis of data from the Rosetta probe shows an ultraviolet aurora all around the speeding object.

Comets
On July 18, 2020, astrophotographer Evan Zucker and his wife, Paula, drove three hours to the Mojave Desert north of Desert Center, California, to see Comet NEOWISE. "The comet itself was an very obvious naked eye object, even all the way down to the horizon, but the ion tail was a challenge to perceive naked eye," Zucker said. They used a Sony a7iii camera with a Sony 85mm f/1.4 GM lens, set to f/1.4 and ISO 800, mounted on a 6-in. Celestron telescope to provide tracking. The single 13-second exposure was processed in Adobe Lightroom and Topaz AI De-Noise.

The curtain is about to come down on Comet NEOWISE

By Joe Rao published

The brightest comet to appear in Northern Hemisphere skies in nearly a quarter of a century will soon be ending its run as a naked-eye object.

Comets
Comet NEOWISE, as photographed by Joy Ng, a multimedia producer at NASA's Goddard Space Flight Center.

Comet NEOWISE: 10 big questions (and answers) about the icy wanderer

By Chelsea Gohd published

Comet NEOWISE has returned to the skies and is delighting skywatchers. So what makes this comet so special?

Comets
Processed data from the WISPR instrument on NASA’s Parker Solar Probe shows great detail in the twin tails of Comet NEOWISE, as seen on July 5, 2020. The lower, broader tail is the comet’s dust tail, while the thinner, upper tail is the comet’s ion tail.

Dazzling Comet NEOWISE could be an astronomical bonanza

By Mike Wall published

Astronomers are buzzing about Comet NEOWISE, which observers under clear, dark skies in the Northern Hemisphere can currently see with the naked eye.

Comets
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