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an illustration showing the hypothetical Planet 9 with blue rings and a question mark over it, with stars and a galaxy in the background
Planet Nine: Is the search for this elusive world nearly over? Astronomers have been scouring the outer solar system for signs of a hypothetical ninth planet for almost a decade, without success. However, we may finally be on the cusp of finding it, experts say.
Each bright spot in this image, the first all-sky image by eRosita, is black hole or a neutron star.
5 space discoveries that scientists are struggling to explain From "runaway" black holes shooting across the cosmos to secret planets in our own backyard, space is overrun with mysterious objects that scientists are clamoring to explain. Here are five of the strangest sights in the universe, as well as their possible origins.
An illustration of a large, round asteroid having a close encounter with the blue Earth
NASA's most wanted: The 5 most dangerous asteroids to Earth What is the most dangerous asteroid, how probable is an impact, and how much destructive power would a collision with Earth have? Here are 5 big space rocks that NASA is watching closely.

Latest about Space

An artist's illustration of primordial black holes.

Miniature black holes could be hollowing out planets and zipping through our bodies, new study claims

By Ben Turner published

An artist's illustration of primordial black holes.

Black Holes
Asteroid burning up in the atmosphere above Siberia

'Spectacular' asteroid blazes over Siberia just hours after it was detected

By Pandora Dewan published

Asteroid C0WEPC5 entered Earth's atmosphere at 1:15 a.m. local time on Dec. 4 over northeastern Siberia.

Asteroids
A photo of the sun with three large black shapes forming a smiley face

We are fast approaching the sun's 'battle zone' — and it could be even worse than solar maximum, experts warn

By Harry Baker published

Space weather experts warn that solar activity will persist or even increase after solar maximum has ended and we enter a phase of the solar cycle dubbed the "battle zone."

The Sun
An E-shaped green aurora (circled) in the sky above a forest at night

Extremely rare, black 'anti-auroras' paint luminous 'letter E' above Alaska

By Harry Baker published

A "bizarre" E-shaped aurora was recently photographed dancing in the sky above Alaska. The unusual light show was caused by rare black auroras, a.k.a. anti-auroras, which catapult charged particles from the sun back out of Earth's atmosphere and into space.

The Sun

'Cataclysmic' solar storm hit Earth around 2687 years ago, ancient tree rings reveal

By Daisy Dobrijevic published

If this colossal solar storm hit our technologically advanced world the effects would have been devastating.

Space
James Webb Space Telescope image of the stellar nursery N79 in the Large Magellanic Cloud, a satellite galaxy of the Milky Way.

James Webb Space Telescope smashes its own record to find the earliest galaxies that ever existed

By Ben Turner published

James Webb Space Telescope image of the stellar nursery N79 in the Large Magellanic Cloud, a satellite galaxy of the Milky Way.

Cosmology
An asteroid approaches Earth from space

Massive, 'potentially hazardous' asteroid due to make closest-ever approach to Earth tonight — and you can watch it live

By Pandora Dewan published

The stadium-sized asteroid 2020 XR is due to make its closest approach to Earth on record early on Dec. 4, and the encounter will be livestreamed for everyone to see.

Asteroids
An illustration of a lonely flying saucer against the dark backdrop of space

12 strange reasons humans haven't found alien life yet

By Brandon Specktor published

Scientists have been searching for evidence of extraterrestrial life for decades. So, where are all the aliens? Here are 12 intriguing theories ...

Extraterrestrial Life
A device placed on the surface of the moon

Time moves faster on the moon, new study of Einstein's relativity shows

By Matthew R. Francis, Eos.org published

Using Einstein's theory of general relativity, physicists found that clocks on the moon would run 56 microseconds faster than clocks on Earth. That finding will help future lunar missions navigate.

The Moon
An author's impression of a moon rover from the Canadian Space Agency.

Canada wants your help to name its 1st moon rover

By Elizabeth Howell published

Canada will soon roll a rover onto the moon, and you can help name the pioneering machine.

The Moon
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