Nell Greenfield Boyce

Nell Greenfield-Boyce, NPR News.

Three NASA astronauts are living on the station, along with three Russian cosmonauts and an astronaut from Japan.

NASA astronauts Mike Fink and Zena Cardman were getting everything ready to do a spacewalk that was going to last about six and a half hours.

The plan was for them to install some equipment for a solar array, snap photos of external hardware, and take samples of microbes.

But Wednesday afternoon, NASA said the spacewalk was called off.

The agency cited a medical concern with a crew member.

While saying it would be inappropriate to share more details due to medical privacy, the agency said that the situation was stable.

Nell Greenfield-Boyce, NPR News.

Walking upright frees the hands and makes it possible to leave the trees and live in new places.

Now, a team of researchers led by Scott Williams of New York University says they found skeletal features associated with upright walking in the fossilized leg bone of a primate that lived 7 million years ago.

Their findings, described in the journal Science Advances, are sure to be controversial.

The oldest widely accepted evidence of upright walking is from human relatives that lived around 3 to 4 million years ago.

Nell Greenfield-Boyce, NPR News.

If you were hoping to see the peak of the quadranted meteor shower, the full moon is a bummer, as it will wash out the shooting stars.

But if you like to moon gaze, you can also check out bright Jupiter, which will be right below the moon.

This is the last supermoon until November,

But 2026 will have 13 full moons because the month of May will have a second full moon, a.k.a.

a blue moon.

There will also be a total lunar eclipse in March and a total solar eclipse in August.

But that solar eclipse won't be visible from the United States.