Posts by 

Kelly Kizer Whitt

Today's Image

What’s this rainbow patch in the sky?

One EarthSky reader captured a photo of a rainbow patch hanging below a cloud, looking almost like a sheet of rain. What was it?

Meteors from rare long-period comets

With a global camera network, scientists track meteors of long-period comets - which take thousands of years to orbit once - to predict the next meteor rain.

Best Milky Way pics of 2021

Capture the Atlas announced its 2021 Milky Way Photographer of the Year. This annual edition showcases 25 of the best Milky Way photos from around the world.

Saturn’s cold blue hemisphere

In recent years, earthly observers couldn't see Saturn's southern hemisphere. It was largely hidden behind Saturn's rings. In 2021, Saturn's rings and north pole reached their maximum tilt toward Earth, and now the southern hemisphere is coming back into view ... colored blue.

At long last, a radio telescope on the moon’s far side

The Lunar Crater Radio Telescope is now moving into Phase 2 of development. It'll be built by robots, into a natural bowl-shaped crater on the moon's far side. If completed, it'll be the largest radio telescope in the solar system.

How to capture Mercury’s sodium tail

Did you know that the closest planet to the sun, Mercury, has a tail much like a comet? You can see it in photographs taken with special filters to highlight sodium blown off the planet by the solar wind.

Anniversary of the Mount St. Helens eruption

On May 18, 1980, Mount St. Helens erupted in a deadly explosion, collapsing one side of the mountain and killing 57 people.

See a nova or “new” star. V1405 Cas is now visible to the eye

A nova that first brightened in March of 2021 has now flared bright enough to be seen without binoculars or a telescope.

New type of aurora revealed in 19-year-old video

Scientists call it a "diffuse auroral eraser." That's because this newly named aurora first appears as a bright stripe over a diffuse auroral background. Then, when it disappears, it scrubs out the faint auroral light behind it.

Voyager 1 detects a hum in interstellar space

Now 8 years into its travels in the deep reaches of space between the stars, Voyager 1 has detected a faint, low-level hum. It stems from the vibration of the plasma, or ionized gas, in interstellar space.