The interstellar comet 3I/ATLAS, recently discovered in our solar system, could be nearly 12 billion years old. Its ...

The comet formed in a cold and distant part of the early Milky Way up to 12 billion years ago, potentially putting it just under 2 billion years the age of the universe. The Gaia telescope spotted ...

Our solar system's famous "invader" might be as old as the Milky Way itself.

Webb Telescope heavy hydrogen in 3I/ATLAS reveals rare deuterium-rich chemistry and a possible ultra-cold alien origin.

NASA’s PUNCH was tracking comet SWAN when 3I/ATLAS whizzed past. Credit: NASA/Southwest Research Institute ...

New data from the James Webb Telescope has identified an unusually high concentration of deuterium in the interstellar comet ...

Scientists captured a comet breaking apart in real time, offering a rare look at ancient material hidden inside these icy ...

Allen Institute for AI, a prominent Seattle-based nonprofit research organization working on advancing artificial ...

The interstellar comet 3I/ATLAS will soon leave our solar system, never to return, but the observations of the comet will ...

At the time of the observations, comet 3I/ATLAS had just passed its perihelion, its closest ever approach to the Sun. While ...

The European Space Agency (ESA) has released a video of interstellar comet 3I/ATLAS, constructed from images taken by a probe ...