Posts by 

Kelly Kizer Whitt

Deep-sky objects: Small telescope and binocular targets

Deep-sky objects - including bright and dark nebulae, star clusters and distant galaxies - are favorite targets for amateur stargazers.

Sky measurements: Degrees, arcminutes and arcseconds

What are sky measurements - or distances - in the night sky? Here's what it means for objects to be several degrees (or arcminutes or arcseconds) apart.

Rare alignment of Earth, moon and sun in early January

There will be a rare alignment of Earth, the moon and the sun in early January. The moon will be a supermoon on the same date that Earth is closest to the sun.

See the Martian moon Phobos fly over a dust storm

See the Martian moon Phobos as it passes over iconic landscapes on the red planet, including a trio of volcanoes and the largest canyon in the solar system.

Orion the Hunter, the most recognizable constellation

Orion the Hunter may be the most recognizable constellation, visible from both hemispheres. It's best in winter from the north and summer from the south.

Earth’s radio bubble marks how far our signals have traveled

Earth's radio bubble is the extent to which our radio broadcasts have traveled. The 1st intentional radio broadcast was on December 24, 1906. Where is it now?

Apollo 8 Earthrise photo Christmas Eve 1968

Astronaut William Anders took this iconic photo of Earthrise on the 4th orbit of the moon aboard Apollo 8 on December 24, 1968.

Top 6 favorite EarthSky videos from 2025. Watch them here!

Here are our top 6 favorite EarthSky videos from 2025. What will we share in 2026? Visit YouTube.com/@EarthSky to find out!

See the top 10 stories of 2025 from EarthSky

Here are the top 10 stories of 2025. An interstellar comet visited us, cameras captured a meteorite strike and an earthquake, and much more!

The Christmas Tree cluster, a December delight

The Christmas Tree cluster is a collection of sparking bluish-white stars. It is above a cone-shaped cloud of gas in the constellation Monoceros.