Is a sun a star or a planet? Current definitions define a star as a body that generates its own energy. While humans have relied on the sun for hundreds of thousands of years, it's only in the last ...

Just because Pluto was ruled out as a planet in 2006 doesn’t mean our solar system only has eight planets. The search for Planet Nine is far from over as scientists continue to uncover clues ...

Our planet whirls around the sun in an ellipse, rather than a circle. On Thursday the planet reached its farthest point from its star, known as aphelion. By Katrina Miller This article was originally ...

According to a report originally published by Eos and later featured on Space.com, researchers analysed data from NASA's ...

Our sun is about halfway through its life, which means Earth is as well. After a star exhausts its hydrogen nuclear fuel, its diameter expands more than a hundredfold, engulfing any unlucky planets in ...

Astronomers have discovered an Earth-size planet that is showered with so much radiation, its atmosphere eroded away long ago, leaving it bare. Life as we know it can't exist on this blistering world, ...

SAN FRANCISCO--(BUSINESS WIRE)--Planet Labs PBC (NYSE:PL), a leading provider of daily Earth data and insights, announced today that its first hyperspectral satellite, Tanager-1—made possible by the ...

A study using NASA’s TESS data finds that aging Sun-like stars lose close-orbit planets as they evolve, offering insight into the long-term fate of planetary systems ...

In honor of Sun-Earth Day 2005, Space Imaging has created a special IKONOS satellite image gallery of 13 ancient observatories around the world. Known for their ability to precisely align with the sun ...

Before the solar system had planets, the sun had rings — bands of dust and gas similar to Saturn’s rings — that likely played a role in Earth’s formation, according to a new study. “In the solar ...