homehome Home chatchat Notifications


Amateur astronomer discovered a new sungrazing comet during last week's eclipse

Sadly, it met its end in the Sun's corona.

Alexandru Micu
December 22, 2020 @ 4:45 pm

share Share

An amateur astronomer discovered a new sungrazer comet during last week’s solar eclipse, NASA reports. The body has been christened C/2020 X3 (SOHO).

Comet C/2020 X3 (SOHO) in the bottom left-hand corner with a composite image of the total eclipse (right).
Image credits: ESA/NASA/SOHO.

Sungrazing comets are like their brethren in every way except they pass very close to the Sun, sometimes within a few thousand kilometers of its surface. C/2020 X3 (SOHO) has been discovered by Worachate Boonplod on December 13 (a day before the eclipse) as part of the Sungrazer Project — a citizen science project which allows the public to look for comets in images from the Solar and Heliospheric Observatory, or SOHO.

New old comet

The sungrazer belongs to the Kreutz family of objects, NASA explains, which are the fragments of a larger comet that broke apart around one millennia ago. C/2020 X3 (SOHO) evaporated on approach towards the Sun, but other grazers still orbit around our star, the agency adds.

During its last moments, the comet was traveling at around 450,000 miles per hour, reaching as close as 2.7 million miles from the star’s surface. It was about 50 feet (15 meters) in diameter and disintegrated into dust on approach.

“But wait!”, you might say — “what eclipse?”. Last week saw the last eclipse of 2020, which was visible from a relatively narrow region in the Pacific, southern South America, and Antarctica. People in Chile, Argentina, and communities living in the southern Atlantic and Pacific oceans could see it as a total eclipse.

This is the 3,524th Kreutz sungrazer spotted by SOHO. None have yet been seen to actually hit the star, as they burn away in the lower corona (the Sun’s atmosphere) or pass around 31,000 miles (50,000 kilometers) away from its surface. SOHO works similarly to a solar eclipse, NASA adds, which is why it’s so good at spotting sungrazers. The telescope uses a solid disk to block out light coming in directly from the Sun, letting us analyze its dimmer atmosphere and close-by objects.

share Share

AI 'Reanimated' a Murder Victim Back to Life to Speak in Court (And Raises Ethical Quandaries)

AI avatars of dead people are teaching courses and testifying in court. Even with the best of intentions, the emerging practice of AI ‘reanimations’ is an ethical quagmire.

This Rare Viking Burial of a Woman and Her Dog Shows That Grief and Love Haven’t Changed in a Thousand Years

The power of loyalty, in this life and the next.

This EV Battery Charges in 18 Seconds and It’s Already Street Legal

RML’s VarEVolt battery is blazing a trail for ultra-fast EV charging and hypercar performance.

DARPA Just Beamed Power Over 5 Miles Using Lasers and Used It To Make Popcorn

A record-breaking laser beam could redefine how we send power to the world's hardest places.

Why Do Some Birds Sing More at Dawn? It's More About Social Behavior Than The Environment

Study suggests birdsong patterns are driven more by social needs than acoustics.

Nonproducing Oil Wells May Be Emitting 7 Times More Methane Than We Thought

A study measured methane flow from more than 450 nonproducing wells across Canada, but thousands more remain unevaluated.

CAR T Breakthrough Therapy Doubles Survival Time for Deadly Stomach Cancer

Scientists finally figured out a way to take CAR-T cell therapy beyond blood.

The Sun Will Annihilate Earth in 5 Billion Years But Life Could Move to Jupiter's Icy Moon Europa

When the Sun turns into a Red Giant, Europa could be life's final hope in the solar system.

Ancient Roman ‘Fast Food’ Joint Served Fried Wild Songbirds to the Masses

Archaeologists uncover thrush bones in a Roman taberna, challenging elite-only food myths

A Man Lost His Voice to ALS. A Brain Implant Helped Him Sing Again

It's a stunning breakthrough for neuroprosthetics