Categories: Science & Environment

A 130,000 mph comet visits our solar system from another star. The Hubble telescope has just taken its photo.

The Hubble Space Telescope has captured the best image of a high-speed comet visiting our solar system from another star.

NASA and the European Space Agency released the latest photos on Thursday.

Discovered last month by a telescope in Chile, the comet known as 3i-atlas is only the third known interstellar object to pass our way and poses no threat to Earth.

This image provided by NASA/European Space Agency shows a Hubble-captured image of the Interstellar Comet 3i/Atlas on July 21, 2025, when the comet was 277 million kilometers from Earth.

AP


Astronomers initially estimated the size of its icy core at several kilometers across, but Hubble observations narrowed it down to more than 3.5 miles. It could even be as small as 1,000 feet, scientists say, according to a new paper published in the astrophysical journal Letters.

The comet is hurtling at 130,000 mph, but will come closer to Mars than Earth, keeping a safe distance from both. It was 277 million kilometers away when it was photographed by Hubble a few weeks ago. The orbiting telescope revealed a teardrop-shaped dust plume around the core as well as traces of a dusty tail.

NASA previously said the comet would make its closest approach to the sun in late October, wandering between the orbits of Mars and Earth. The agency said the 3i/Atlas is expected to remain visible to telescopes through September, but it will happen too close to the sun to observe. It should reappear on the far side of the sun in early December, allowing renewed observations.

According to the Las Cumbres Observatory in Chile, the object is named “3i” because it is the third such interstellar object to be found, following 1i / ‘Oumuamu in 2017 and 2i / borisov in 2019.

“All three appear to be quite dark and red, reflecting only about 5 percent of the sunlight hitting them, which is similar in reflectivity to asphalt,” the observatory said last month. “Unlike 1i/’Oumuamu, 3i doesn’t change much in brightness as it rotates, indicating that it is more likely to be spherical.”

Los Cumbres Observatory created an animation of image data from its telescope as it tracked the new interstellar on July 4, 2025:


3I_3911772_FRAMEMOVIE_RP by
Las Cumbres Observatory on youtube

As scientists look at the object, some raise questions. Harvard professor Avi Loeb, who is the director of the Institute for Theory and Computation at the Harvard Smithsonian Center for Astrophysics, says it might actually be alien technology. He said many of his characteristics are not typical and his trajectory is “refined.”

“The object looks strange. It reflects a lot of sunlight,” he told “CBS Mornings Plus.” “Also, this object has some glow in front of it, not behind it. There is no tail, as is usually the case with comets.”

He advises that the best way to proceed is to collect as much scientific data as possible.

“Don’t assume anything, just monitor it and decide if it maneuvers, if it has artificial lights, if it looks like a technological object, and if it ends up being a comet, that is,” he said.

Source link

Ethan Davis

Ethan Davis – Science & Environment Journalist Reports on climate change, renewable energy, and space exploration

Recent Posts

New York Giants hire John Harbaugh as coach

John Harbaugh agreed Saturday to become coach of the New York Giants, finalizing the longtime big-market franchise's all-out search for…

3 days ago

After U-Va. resignations, Spanberger appoints 27 to Virginia college boards

Virginia Gov. Abigail Spanberger (D) moved quickly to change direction at the state's universities in her first hours in office…

3 days ago

Lamar Odom arrested and booked for drunk driving

Lamar Odom faces new legal problems. The two-time NBA champion was arrested and convicted of driving under the influence on…

3 days ago

BMC elections 2026: Here’s how to check your name in the Mumbai electoral roll

Polling for the Maharashtra municipal corporation elections, including that of the crucial and cash-rich Brihanmumbai Municipal Corporation (BMC), will be…

3 days ago

Trump: I might want to keep Hassett where he is

Trump appears to rule out Hassett as Fed chairman in his comments.Trump said Hassett was good on television today and…

3 days ago

Broncos take 20-10 halftime lead as Josh Allen’s fumble sets up last-second field goal

An incredibly costly fumble by Josh Allen changed the game just before halftime today in Denver.After the Broncos scored a…

3 days ago