The Earth started as a mixture of gas and dust around the Sun and grew as it collided with asteroids and dust particles.

Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies these rocky, or "terrestrial," worlds are far more common than was suspected ...

Kosmos-482, a spacecraft bound for Venus in 1972, was a time capsule from the Cold War when superpowers had broad ambitions ...

We've even been asked if you could run solar cells during the long lunar night on reflected earthlight, so we decided to ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...

Asteroid 2025 HY2, an Apollo-class asteroid, will pass Earth on May 7, 2025, at a speed of 48,904 km/h. Though passing at a ...

This planet is part of a larger sample that ... An illustration showing a rough size comparison between Earth, a super-Earth, and a Neptune-size gas giant. | Credit: Robert Lea (created with ...

NASA is also tracking two other asteroids near Earth today, including a larger bus-sized one called "2025 HR1" that's ...

“We now have this tasking from NASA to find everything that’s larger than 140 meters in size.” The last major asteroid impact ...

"This measurement of the planet population from planets somewhat larger than Earth all the way to the size of Jupiter and beyond shows us that planets, and especially super-Earths, in orbits ...