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.

Thousands of pieces of space debris, also known as space junk, are orbiting Earth, with tons more added each year. This orbital debris poses a significant threat to satellites, spacecraft, astronauts ...

SpaceX launched another batch of Starlink V2 Mini satellites into orbit from Florida on Sunday morning in its latest mission. The 28 broadband internet satellites were launched into orbit aboard ...

Space is getting crowded, with junk. Essential satellites delivering navigation, weather forecasts, the Internet and other services face this threat daily. Old rockets, decaying spacecraft and human ...

Beginning Sunday, Earth's skies will soon have a temporary visitor. On September 29, an asteroid dubbed 2024 PT5 will become a "mini-moon" of sorts, temporarily entering Earth's orbit for almost two ...

SpinLaunch says its network will offer "significantly higher broadband capacity in a satellite constellation compared with what is available on the market today." SpinLaunch has unveiled its plans for ...

SpaceX now has nearly 5,900 Starlink satellites in low-Earth orbit, but it wants 30,000, posing potential safety concerns as space around the planet gets ever-more crowded. Our team tests, rates, and ...