The month is packed with skywatching highlights—including two galaxies visible to the naked eye and a rare glimpse of the ...

The last three full moons of 2025, coming in early October, November and December, will be supermoons — appearing at closest ...

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.

A new celestial object, a quasi-moon, has been discovered in Earth’s orbit. This cosmic companion has been circling our planet unnoticed for decades, possibly up to 60 years, and is now redefining our ...

A super-Earth, HD 20794 d, has been confirmed within a habitable zone 20 light years from Earth. The planet, first detected in 2022, has a mass six times that of Earth and orbits a sun-like star.

The photo, taken during the X-37B’s seventh mission, shows Earth from High-Elliptical Orbit. On Feb. 20, 2025, the Secretary of the Air Force Public Affairs uploaded on the DVIDS website, what is ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. This article is more than 4 years old. The Earth, moving in its orbit ...