An interstellar comet that originated outside our solar system just flew by the sun. Next, the object will fly by Earth in December.

Researchers rarely get a glimpse of an interstellar object up close like 3I-ATLAS, so they have jumped on the opportunity to learn about its composition, which can reveal how planet systems are made.

An interstellar tourist is taking a quick trip through our solar system, becoming one of just three known objects to ever do so, according to NASA. A comet from a solar system outside our own was ...

NASA’s SPHEREx joined Webb and Hubble in studying interstellar comet 3I/ATLAS, gathering data on its size, chemistry, and physical traits. While harmless to Earth, the comet provides scientists a rare ...

NASA's Psyche orbiter looked back and snapped a photo of Earth with the moon on its way to the asteroid Psyche in 2029. - NASA / JPL-Caltech / ASU illustration As a NASA spacecraft whizzed away from ...

NASA’s experimental solar sail is ready to take flight in Earth orbit, using the pressure of sunlight to test a new way of propulsion through the cosmos. The Advanced Composite Solar Sail System(ACS3) ...

Scientists have just discovered a rare interstellar object hurtling through the solar system, and it's expected to make its closest approach to Earth on October 30. Officially named 3I/ATLAS, the ...