Stunning Hubble image shows a big galaxy full of blue stars By Kasandra Brabaw Imagine a galaxy and what comes to mind likely looks like NGC 2336, a shimmering swirl of stars.
NASA's TESS planet hunter spied 2,200 candidate worlds in its first 2 years By Meghan Bartels A NASA spacecraft built to spot alien worlds has completed its first two years of work, and the tally is in: the mission hauled in 2,241 new planet candidates for scientists to study.
Seeing the invisible: How Nobel laureate Andrea Ghez found the supermassive black hole in the Milky Way's center By Meghan Bartels Astrophysicist Andrea Ghez has spent her scientific career peering at the center of the Milky Way, trying to see the invisible.
What messages have we sent to aliens? By Isobel Whitcomb The most important thing we've communicated? That we exist.
World's oldest meteor crater isn't what it seems By Harry Baker The world's oldest meteor impact crater is not a crater at all, say scientists of a new study suggesting natural forces put the giant indent into Earth's surface. But the jury is still out.
The 1st few seconds of the Big Bang: What we know and what we don't By Paul Sutter Believe it or not, physicists are attempting to understand the universe when it was only a handful of seconds old.
Mars helicopter Ingenuity carries piece of Wright brothers' famous plane By Mike Wall NASA's Mars Helicopter Ingenuity, which is poised to make its first flight in early April, bears a tiny swatch of fabric from one wing of the Wright brothers' history-making plane Flyer 1.
First image of a black hole gets a polarizing update that sheds light on magnetic fields By Chelsea Gohd
To be declassified: UFO broke sound barrier with no sonic boom By Stephanie Pappas Former Trump intelligence director John Ratcliffe told Fox News that more unexplained sightings of flying objects will soon be declassified.
NASA's Mars helicopter Ingenuity could fly for 1st time on April 8 By Mike Wall We may be just over two weeks away from the first powered flight by an aircraft on an alien world.
An asteroid the size of a semi-truck and two other space rocks are flying by Earth today By Elizabeth Howell Three asteroids are making close approaches to our planet today (March 23), but don't worry; the small rocks pose no threat.
Integrating diverse satellite images sharpens our picture of activity on Earth (op-ed) By Amanda Ziemann A new mathematical application provides a more complete picture of our changing world by drawing on data from several kinds of sensors.
NASA to unveil plans for Mars helicopter test flights today. Here's how to watch live. By Samantha Mathewson NASA is expected to unveil new details about the debut flight of its Mars Ingenuity helicopter during a media briefing today (March 23).
Saturn's summer season ends as Hubble telescope watches (photos) By Doris Elin Urrutia Saturn takes roughly seven Earth years to begin and end one of its seasons.
Mars is leaking water into space during dust storms and warmer seasons By Chelsea Gohd Water is leaking from Mars' atmosphere through changing seasons and swirling Martian storms, scientists found in two new studies.
Paraguay's 1st satellite is in orbit after launch from space station By Doris Elin Urrutia On March 14, Paraguay's first-ever satellite entered orbit around Earth.
Newly discovered bacteria on space station could help astronauts grow plants on Mars By Chelsea Gohd Researchers have discovered three new strains of bacteria that they think could one day help astronauts to grow their own food.
Mars helicopter Ingenuity gets 1st taste of Red Planet air (video) By Mike Wall Over the weekend, NASA's Perseverance rover dropped the debris shield that protected the Mars helicopter Ingenuity during the mission's epic Feb. 18 touchdown.
The mysterious core of Mars is on the large side, NASA's InSight lander data suggests By Meghan Bartels
Interstellar object 'Oumuamua is a pancake-shaped chunk of a Pluto-like planet By Charles Q. Choi 'Oumuamua, the first known visitor from interstellar space, was likely a pancake-shaped chip off a Pluto-like world.
