Posts by 

Eleanor Imster

View from space: Nyamuragira and Nyiragongo volcanoes

Located in the Democratic Republic of the Congo near the border with Rwanda and Uganda, the volcanoes are among the most active on Earth.

Halo around the sun

Solar halo seen in Indianapolis, Indiana by Jolynn Keutzer Bales. Thank you Jolynn!

Could a full moon be to blame for a poor night’s sleep?

Scientists working in Switzerland say they have "some of the first convincing scientific evidence" that the full moon interferes with sleep.

Cosmic whirl

The center of galaxy NGC 524, 90 million light-years from Earth in the constellation Pisces, as seen by the Hubble Space Telescope.

Earth’s night lights: Watch 24-hour rotation in 30 seconds

Watch an animation of the night side of Earth for one rotation of our planet. Earth's night twinkles with light, and the first thing to stand out is the cities.

Last night’s moon: Two great pics

A large waxing gibbous moon is lighting up the evening sky now, heading for another supermoon on July 22.

Airglow over Yosemite National Park

Airglow is light that originates in the high atmosphere, associated with photochemical reactions of gases caused by solar radiation. Thank you Kristal Leonard-Ferrara!

Astronaut view of the Red Sea

This astronaut photo of the Red Sea lets you easily visualize how Africa and Arabia were once a single landmass before the Red Sea rift formed.

Color under the storm clouds

After sunset, on the Gulf shores of Alabama

Video: Mars rover watches Mars moon Phobos passing overhead

If you were standing on planet Mars, how would it look to see a Mars moon move across the sky? Well, here's how.