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Boost for Mars life? Red Planet's magnetic field may have lasted longer than thought
By Keith Cooper published
Mars' global magnetic field may have hung around for 200 million years longer than scientists had thought, possibly giving life a longer window to take hold on the Red Planet.
'Cosmic inflation:' did the early cosmos balloon in size? A mirror universe going backwards in time may be a simpler explanation
By Neil Turok published
We live in a golden age for learning about the universe. Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales.
If black holes form in 'reverse Big Bang replays' they could account for dark energy
By Robert Lea published
Black hole formation could be a little Big Bang in reverse, coupling the matter of a dying star with dark energy, the mysterious force driving the accelerating expansion of the universe.
Hubble watches neutron stars collide and explode to create black hole and 'birth atoms'
By Robert Lea published
Astronomers have used a range of telescopes, including Hubble, to watch as particles dance around a neutron star collision that created the smallest black hole ever seen.
Satellites watch devastating floods in Spain from space (photos)
By Elizabeth Howell published
Valencia was particularly hard-hit.
X-class Halloween solar flare erupts from sun, causes radio blackouts (video)
By Meredith Garofalo published
The sun erupted with an X-class solar flare on Halloween, and solar activity is expected to remain high through Nov. 3.
Explore Jupiter's icy ocean moon Europa in NASA virtual tour (photos)
By Stefanie Waldek published
Thanks to images from various NASA spacecraft, we can get an up-close look at the Jupiter ocean moon Europa long before the agency's Europa Clipper probe arrives.
Perseverance rover watches 'googly eye' solar eclipse from Mars (video)
By Samantha Mathewson published
NASA's Perseverance Mars rover was treated to a 'googly eye' solar eclipse on Sept. 30 as the planet's moon Phobos passed in front of the sun.
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