Unifying all the forces and particles would require a particle accelerator far more powerful than humans have ever built.
When observed from the darkest of skies, the Milky Way galaxy can glitter and gleam with all the colors of the rainbow.
April 26, 1803 was an unusual day in the small town of L'Aigle in Normandy, France — it rained rocks.
There's a whole universe of nameless stars and exoplanets beyond our solar system, and now space fans around the world will have a chance to help name these objects.
Most of the star nearest to Earth are red dwarfs, but they are too dim to be seen with the naked eye.
Astronomers have spotted a ridge of radio emissions 10 million light-years long joining two galaxy clusters that are slowly colliding with each other.
The company behind "Space Racers," a TV series for preschoolers, has opened a contest inviting grandparents to share their moon-landing memories with their grandchildren — and the public.
The universe really likes its information — but black holes pose a huge paradox physicists can't yet solve.
D-Day's planners employed a solid knowledge of moon phases and tides to give the famous invasion the best chance for success 75 years ago today (June 6).
A recent close encounter with a large asteroid and its little moon was captured by a telescope as the pair zipped past Earth at 43,500 mph (70,000 kilometers per hour) on May 25.
If lightning exists on Mars, it may be less energetic and frequent than lightning on Earth, all because of the Red Planet's thin air, a new study finds.
X-ray observations of a peculiar galaxy deep within the constellation Hydra (the Sea Serpent) have revealed more dark matter at its core than expected.
The handlers of NASA's InSight Mars lander plan will lift the support structure of the burrowing 'mole' out of the way so they can get a better look at the stuck instrument.
NASA's Parker Solar Probe is on its way to another close encounter with the sun, where investigators hope the spacecraft will solve a long-standing solar mystery.
For the first time, astronomers may have imaged the cool disk of gas surrounding the gigantic black hole at the heart of the Milky Way, a new study finds.
Quantum mechanics is settled science. Case closed, and thank you very much — or so many would argue.
The moon has always served as an inspiration for humanity, and there are many potential benefits for further exploration of our planet's rocky satellite.
The International Astronomical Union (IAU) is voicing concerns about the risk Starlink and other planned massive satellite constellations in low Earth orbit pose to astronomy.
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