Next month, the Earth will come between the sun and the moon, causing the moon to take on an eerie reddish hue.

What scientists thought were four separate star clusters are actually part of one nearly invisible system.

For two weeks, medical experts monitor the astronauts as they remain indoors, live in isolation, and avoid physical touch, all to prevent harmful microbes from traveling to space.

A team of geologists found for the first time evidence linking regions of low seismic velocity and the shape of the Earth’s magnetic field.