If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

With improved telescopes, astronomers started looking for another proof of Earth’s motion around the Sun, stellar parallax. Earth’s orbit is huge — some 186 million miles (300,000,000 ...

answers some of the internet’s most asked questions about astronomy during Zion’s Autocomplete Interview. She explains how astronomers measure star distances using parallax, rate stellar ...

It hangs in the sky like a cosmic bubble, eerily round, barely glowing in the radio spectrum. Among the wreckage of the Milky ...

Radio astronomy was discovered almost by accident ... gives stereo vision by taking advantage of parallax and the finite speed of light—a process called very-long-baseline interferometry ...

With some regularity, I get asked the difference between astronomy and astrophysics. I suppose I’m a good person to ask: Of my three degrees, two of them are in “astronomy and astrophysics”.

As an astronomy major, you’ll study how the universe formed and learn about the stars, planets, black holes, dark matter, galaxies and solar systems. With education requirements centered on ...

Astronomy Space photo of the week: Hubble hunts a stellar 'imposter' hiding in the Great Bear Astronomy Record-breaking 'dead' galaxy discovered by JWST lived fast and died young in the early ...

Astronomy Space photo of the week: Hubble hunts a stellar 'imposter' hiding in the Great Bear Astronomy James Webb telescope reveals hidden past of the Crystal Ball Nebula - Space Photo of the ...