The scientists say their image, which combines images from more than 23,000 galaxy pairs, confirms dark matter's existence. Will other astronomers agree?
The newly discovered Great Cold Spot on Jupiter rivals the scale of the planet's Great Red Spot. It's thought to be driven by powerful energies from auroras at Jupiter's poles.
It isn't a supernova or dying star. It's an explosion during star birth and provides insights into the sometimes-fierce relationship among sibling stars.
Asteroid 2017 GM is one of the 10 closest asteroids known so far to sweep past Earth, and then keep going. At its closest, it was less than 1/20th of the moon's mean distance.
The near-Earth asteroid 2017 FU102 has a very close, but safe, encounter with Earth on April 2, 2017, sweeping to within just over half the moon's distance.