Decreased physical activity in mammals can lead to significant bone loss and increased fracture risk over time. Yet this is not quite the case for the black bear (Ursus americanus), who is physically inactive for up to six months annually but somehow manages to keep a strong, healthy skeletal struct...
A team of astronomers have watched a previously dormant black hole wake up in a dramatic display. They've seen material fall into the black hole for the first time in perhaps millions of years.
NASA's black hole telescope has captured an amazing picture of our sun.
The universe overflows with repeating patterns-from the smallest cells to the largest galaxies. Now, scientists have taken a closer look at surfer's waves which occur not only on the ocean, but also in space.
Some of the biggest explosions in the universe are associated with gamma-ray bursts. Now, scientists have taken a closer look at these bursts to better understand the explosions behind them.
Almost 2,000 exoplanets have been discovered to date. But how many of these planets are habitable, and how can we find out?
Martian gems could actually point to evidence of life on the Red Planet. They've discovered physical evidence of opals on Mars, which could also mean that there's life.
Scientists have created a map of the sky with the help of the Planck satellite, revealing a ring of dust that's 200 light-years across and a loop that covers a third of the sky.
Researchers may have found a way to predict space weather up to five days in advance. Scientists have proposed an operational mission called Carrington-L5 to give that five-day warning.
A record-breaking solar flight has reached Hawaii. At the controls of Solar Impulse 2, pilot Andrew Broschberg landed safely in Hawaii after flying 117 hours and 52 minutes over the Pacific Ocean from Japan powered not by fuel, but by the sun.
Scientists have discovered evidence for a large population of hidden supermassive black holes in the universe. The findings could be huge for better understanding black holes in general.