Heartfelt thanks for a great 2018. We'll be off Monday and Tuesday. Back January 2. Wishing you the happiest of New Years!
The July 27, 2018, total solar eclipse was the longest solar eclipse of the 21st century. Plus that night's moon was near Mars, at its brightest since 2003. Photo by Nima Asadzadeh in Iran.
Wow! Huge thanks to the EarthSky community for all the images you've contributed this year. Check out the beautiful images in this post, plus links to more of 2018's most popular photos.
From the months-long eruption of Hawaii's Kilauea Volcano to a strange object discovered on the surface of Mars - and more - you'll enjoy 2018's most popular stories.
Astronomer Guy Ottewell has developed a novel way of picturing ourselves riding on Earth, orbiting the sun. See those past-and-future Earths as we look backward at the old year, and forward into the new. The charts are here.
New Horizons is the spacecraft that sent back those amazing images of Pluto in 2015. Ultima Thule is its next target, a billion miles beyond Pluto. The encounter is New Year's Day, but there are several fun events on Monday. Here's how to follow it.
The fast-moving New Horizons spacecraft launched from Earth in 2006 and had its historic encounter with Pluto in 2015. Now the craft is in the Kuiper Belt, preparing to encounter its 1st object in this region, Ultima Thule, on January 1, 2019. Illustration via NASA. Read more.
The 1st mornings of 2019 will feature a dazzling line-up of the moon and 3 planets. Here are some tips on how to see the moon sweeping past Venus, Jupiter and Mercury. Happy New Year!