New Hubble Image Shows Interstellar Comet 3I/ATLAS Approaching Solar System
The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another star. 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 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). The comet is hurtling toward Earth 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.