Hubble Space Telescope takes best picture yet of the comet visiting from another solar system

August 7, 2025

Hubble Space Telescope takes best picture yet of the comet visiting from another solar system

by Marcia Dunn

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Hubble Space Telescope takes best picture yet of the comet visiting from another solar system — This image provided by NASA/European Space Agency shows an image captured by Hubble of the interstellar comet 3I/ATLAS on July 21, 2025, when the comet was 277 million miles from Earth. Credit: NASA/European Space Agency via AP

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

NASA and the European Space Agency released the latest photos 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.

Astronomers originally estimated the size of its icy core at several miles (tens of kilometers) across, but Hubble's observations have narrowed it down to no more than 3.5 miles (5.6 kilometers). It could even be as small as 1,000 feet (320 meters), according to scientists.

The comet is hurtling our way at 130,000 mph (209,000 kph), but will veer closer to Mars than Earth, keeping a safe distance from both. It was 277 million miles (446 million kilometers) away when photographed by Hubble a couple weeks ago. The orbiting telescope revealed a teardrop-shaped plume of dust around the nucleus as well as traces of a dusty tail.

Citation: Hubble Space Telescope takes best picture yet of the comet visiting from another solar system (2025, August 7) retrieved 3 October 2025 from /news/2025-08-hubble-space-telescope-picture-comet.html

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