Astronomers say that mysterious interstellar visitors like 'Oumuamua and 3I/ATLAS are the most common large bodies in the ...

This unexpected color raises new questions about the alien chemistry of comets from beyond our solar system. On Sept. 7 2025, ...

Scientists are now focused on probing its climate, atmospheric composition, and potential water retention, making TRAPPIST-1e ...

Could life exist beyond Earth? This documentary investigates the solar system’s most promising candidates for alien life, from the frozen oceans of Europa to the red deserts of Mars.

The earliest images of 3I/ATLAS, newly uncovered by Michigan State University, reveal how the interstellar object evolved as it traveled through our solar system — and how other distant solar systems ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and probing mysteries of the Universe.

Since its discovery, astronomers have been frantically trying to gather as much information as they can about the newest interstellar interloper dubbed 3I/ATLAS. It's been challenging, but they've ...

As interstellar object 3I/ATLAS approaches its closest point to the Sun next month, the mysterious visitor continues to ...

The odds for life existing on other planets has just skyrocketed after a NASA rover unearthed new evidence on Mars. The odds for life existing on other planets just skyrocketed. NASA’s stoic ...

A study shows spacecraft could intercept interstellar comets with today’s technology, unlocking new insights into material from beyond our solar system.

The Kuiper Belt is loosely defined as a doughnut-shaped swath of space beginning just beyond the orbit of Neptune and extending ... “It represents some of the leftovers from the formation of our solar ...

The first-ever detection of gravitational waves was made 10 years ago today (Sept. 14). In celebration, Space.com takes you ...