The European Space Agency (ESA) created the Space Environment Health Index to track the health of Earth's orbit, assaulted by ...

Earth's orbit is an ellipse, not a perfect circle. Earth's distance from the Sun varies by about 3 million miles throughout the year. Earth's orbit's semimajor axis is approximately 93 million miles.

The Earth often gets a few visitors in the solar system, but some stick around for a while. Here's what to know about the ...

The discovery of a new asteroid in the Earth's orbit around the sun has led to chatter that it's a second moon.

Everyone who has ever lived on Earth has been well-aware of the moon, but it turns out Earth also has some frequent temporary companions. These "quasi-moons" are small asteroids that enter into a kind ...

Twenty more Starlink satellites have been launched into orbit by SpaceX, taking the total number of the tiny satellites to nearly 7,100. The new batch was launched from the Vandenberg Space Force in ...

Researchers are discussing 2025 PN7, a small celestial body that's following a similar orbital path to our planet's without ...

Starting next week, the moon, Earth’s closest celestial body, will be joined by a new neighbor: a second moon. From Sept. 29 until Nov. 25, astronomers calculate that 2024 PT5— which is what ...

Astronomers have spotted a quasi-moon near Earth — and the small space rock has likely been hanging out near our planet unseen by telescopes for about 60 years, according to new research. The newly ...