Scientists say 3I/Atlas came closest to Mars in October. Its path this month put it in the path of the warm rays of our sun, where a tail became more visible. The 3.5-mile solar object is traveling at 137,000 miles per hour, NASA said.

Recent photos reveal that 3I/ATLAS did not disintegrate during its recent fly-by of the sun, leading Harvard scientist Loeb to double down on suggesting that it could be artificial.

Astronomers study 3I/Atlas as its tail rapidly expands and a strange cosmic radio signal reaches Earth, sparking new debate over its interstellar nature.

The object 3I/ATLAS made it past the Sun in one piece, which led Harvard astronomer to double down on his earlier argument about the object's nature.

Blue Origin's New Glenn rocket was scheduled for launch on Sunday (Nov. 9) but it has been delayed until Wednesday (Nov. 12) due to poor weather conditions. The launch will be the first big test for the rocket’s first NASA mission, and a statement of intent for the company’s founder Jeff Bezos against competitor SpaceX.

Harvard's Avi Loeb urges caution for 3I/ATLAS, warning its 'intent' and anomalies suggest a 'Trojan horse'. Experts debate if it's alien tech or just a comet. No threat expected.

A mysterious visitor from beyond our solar system is making a rare appearance: Comet 3i/ATLAS is an interstellar comet, traveling at breakneck speed and carrying clues from a distant star system billions of years old.

Interstellar comet 3I/ATLAS is losing an insane amount of mass after making its closest pass of the sun last month — a phenomenon known as perihelion — prompting Harvard scientist Avi Loeb to speculate that the object might have fragmented into over a dozen pieces.

Take a deep breath. Reports that interstellar comet 3I/ATLAS is breaking apart have been greatly exaggerated – and radio signals received don't mean the object is an alien probe. In fact, quite the opposite is true: Every piece of evidence collected about 3I/ATLAS to date is consistent with a natural,