Voyager 2, launched in 1977, is now about 11 billion miles (17.7 billion km) from Earth. NASA says the spacecraft has detected an increase in cosmic rays, which might mean it's close to becoming only the 2nd human-made object, after Voyager 1, to enter interstellar space.

The early morning update on Wednesday, October 10, shows Michael has strengthened more than expected to a Category 4 hurricane. The storm is due to make landfall on the north Florida coast today.

The Hubble Space Telescope has been in safe mode since last Friday evening, following the failure of one of the gyros that helps stabilize it. NASA is analyzing the problem and hopes to resume operations soon.

Researchers have found microplastics deep in the sand on beaches where sea turtles lay their eggs.

Yuri Milner's Breakthrough Listen program said it has added the MeerKAT telescope in South Africa to its global effort to listen for signals from an alien intelligence.

We know more about the surface of the moon than about Earth’s ocean floor. But analysis of core samples from the deep seabed has given us insights into climate change, Earth’s history, and the key conditions for life.

Links to stories and images of the 7.5-magnitude earthquake and subsequent tsunami in Indonesia on Friday. By Sunday morning, the death toll had gone over 800, with thousands waiting to be rescued.

Smoky air makes it harder for thunderclouds to grow. But pollution - if it's not too heavy - energizes their growth, according to a new study based on satellite data.

These boxy satellites, small enough to fit in a backpack, are currently trailing thousands of miles behind the InSight spacecraft on their way to Mars.

In China and other Asian countries, it's sometimes called the Moon Festival in honor of the upcoming full moon.