The earliest galaxies in the entire universe are lying just outside the Milky Way, providing windows to an ancient time billions of years ago. A new study explains the formation of galaxies during the universe’s so-called cosmic dark ages.
Russia's satellite is officially a space apparatus inspector, but the United States alleged its abnormal behavior suggests a more aggressive nature. In a UN Conference, a State Department official says the Russian satellite could be a space weapon.
Is the Big Bang truly the start of everything? A team of scientists say no, suggesting that circles in the sky hint at a previous universe that came and was destroyed before the Big Bang.
Astronomers say that there are multiple mini-moons that orbit Earth. Mini-moons are asteroids that are temporary fixtures near Earth, getting caught in the planet's gravitational pull before its eventual escape.
Scientists say that there is a wall separating the solar system from the rest of the galaxy. The famous New Horizons spacecraft finally gets a glimpse of this boundary, according to a new study.
Astronaut Leland Melvin spoke candidly on Twitter about a strange 'alien encounter' he had on the Space Shuttle. It turns out, it's not just regular citizens who are on the lookout for extraterrestrial life.
NASA's new planet hunter kicks off its two-year mission with a comet photobombing a shot. In the resulting video, other astronomical events were also captured, including stellar flickering, Mars' reflection, and a host of asteroids on the move.
There's a stray planet floating aimlessly outside the solar system with no discernible orbit anchoring it there. This rogue planet is baffling scientists with its extreme mass and magnetic field.
It's another step in the alien hunt. Astronomers identify the group of planets that are best suited for life, narrowing down the field for the long-running search for extraterrestrial life.
Mysterious radio waves from deep space have made its way to Earth and astronomers are trying to make sense of it. The unexplained signal was detected by Canada's new radio telescope.
Eta Carinae, one of the galaxy's most dazzling stellar objects, exploded in a massive blast 170 years ago. The cause of the blast remain largely a mystery, but in a new study, scientists find clues of the 1840s explosion.
Don't miss the most spectacular meteor shower to grace the skies this year: the Perseid meteor shower. On the night of Aug. 12 to 13, around 60 to 70 meteors will be streaking across the sky for people to enjoy.
The sun is not immune to the 'terrible twos,' according to scientists. In the early years of the sun's existence, it was a fiery, raging ball of fire that spewed particles out into space.
The Hubble Space Telescope celebrates the back-to-back opposition of Saturn and Mars by releasing new photos of the two planets. The images offer a closer look at the moons and storms of the neighboring worlds.
NASA's planet hunter TESS starts scanning the universe for lurking exoplanets. The satellite, launched in April, is expected to identify over a thousand new planets from the stars surrounding the solar system.