Alternatively, this unseen wanderer might be a hefty neutron star. Whatever it is, its gravity caused starlight to be warped — and that gave it away.
The Perseverance rover recorded the sound of laser pulses on Mars. Scientists used those recordings to determine the Martian speeds of sound.
Diamond is born under extreme heat and pressure inside Earth and elsewhere in the universe.
Volcanic eruptions billions of years ago may have produced several temporary atmospheres on the moon that held water vapor.
This magnitude 5 quake is offering scientists a peek at what’s going on beneath the Martian surface.
This “dirty snowball” in space is about twice as wide as Rhode Island and darker than coal.
A thin red arc found in an image from the Hubble Space Telescope shows starlight from nearly 13 billion years ago.
Tracking these subatomic particles can uncover surprising hidden structures.
New observations from the Event Horizon Telescope reveal the chaotic region around the Milky Way’s central black hole, Sagittarius A*, in extreme detail.