A small asteroid will join Earth's orbit around the sun for two months beginning Sunday, becoming a 'mini-moon.' ...

The autumnal equinox, one of two times of the year at which day and night are equal in length, just passed on Sunday the 22nd ...

NASA says the launch window for the Europa Clipper mission opens on October 10, spacecraft to fly for more than five years to its destination.

A longtime space physicist and aurora forecaster at the University of Alaska Fairbanks, Charles Deehr witnessed his first red ...

It's being called the "comet of the century" and won't be back for 80,000 years.

Join NASA's Europa Clipper mission as it explores Jupiter's moon Europa for the key elements for life in the depths of its hidden ocean beneath its icy surface.

Check out the views from the International Space Station of the comet Tsuchinshan-ATLAS putting on a show as it nears the sun ...

Starting at the surface, you would have to dig nearly 2,000 miles before reaching the Earth’s core. No one could survive that ...

The $1.6 billion mission is an extremely complicated engineering challenge and will make gravitational wave detections in ...

A “new star” was forecasted to appear in our night sky in September, but it hasn’t been spotted yet. So where is it?

Data from ESA’s Solar Orbiter and NASA’s Parker Solar Probe have revealed that large fluctuations in the Sun's magnetic field, specifically Alfvén waves, are key to powering and accelerating the solar ...