The cosmological principle predicts uniformity, and the CMB dipole reflects our 370 km/s motion that radio counts should ...

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...

From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet ...

Scientists have been cataloging comet 3I/ATLAS’s journey through the Solar System since July, tracking major milestones as ...

Comet‍‌‍‍‌‍‌‍‍‌ 3I/ATLAS is just the third object that we know of that has been observed to pass through our solar system ...

Astronomers detected an object moving faster than anything ever recorded in our solar system. It didn’t orbit the Sun — it passed straight through. Its size, speed, and chemical makeup don’t match ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

In 2026, there will be journeys to the moon and Mars, new visions of the cosmos and a solar eclipse that might be worth ...

NASA’s Parker Solar Probe and Europa Clipper captured detailed observations of interstellar comet 3I/ATLAS in 2025, providing data on its trajectory, composition, and behavior as it passed through the ...

While the Voyager spacecraft are constantly traveling out of the Solar System, sometimes they are getting closer to Earth.