There’s something about viewing Earth from space — the shift in perspective has for decades moved us emotionally, ...

Thirty-five years ago, the Hubble Space Telescope was launched into orbit. It's been sending back galactic data and images ...

Dubai: A stunning celestial spectacle lit up the skies of Saudi Arabia’s Aseer region this morning, as a rare sun halo formed ...

NASA’s PUNCH mission just took a big step forward with the first images from its solar-observing instruments, revealing the ...

Astronomers have long struggled with a troubling puzzle: a significant portion of normal matter in the universe appeared to ...

Modeling Earth’s atmosphere and magnetic field from 41,000 years ago suggests how Homo sapiens’ sun-fighting strategy helped ...

For decades, astronomers have known something didn’t add up in our universe. The amount of “normal” matter—stars, gas, and ...

Learn how astronomers found the invisible ionized gas that forms puffy halos surrounding galaxies.

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short ...

The central star, transitioning into a white dwarf, has an effective surface temperature of around 135,000 Kelvin and a mass of ... The Ring Nebula, located about 2,570 light years from Earth, ...

Earth Day is on April 22 and this year marks the 55th anniversary. Earth Day is a day set aside to show support for environmental protection, and the first Earth Day was held on April 22, 1970.