On January 1, 1801, a Sicilian astronomer named Giuseppe Piazzi discovered the dwarf planet Ceres orbiting the sun between ...

Here's a brief rundown of 12 of 2025's most memorable mishaps. One caveat first, though: There is no shame in being on the ...

On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

When NASA’s Dawn spacecraft arrived at Ceres, scientists expected to find a cold, inactive relic of the early solar system.

CERES program updates include operational satellite instruments, algorithm advancements, machine learning applications, and ongoing missions measuring Earth’s energy budget and climate system changes.

China hits 90 launches as Guowang deployment continues, Fengyun-4C heads to GEO China reached 90 orbital launches in 2025 ...

Explore This SectionEarthEarth ObserverEditor's CornerFeature ArticlesMeeting SummariesNewsScience in the NewsCalendarsIn ...

China caps record year for orbital launches with Tianhui-7 and Shijian-29 technology test missions China reached 92 orbital ...

If you were to ask a group of dedicated amateur astronomers to list their favorite telescopic targets, few if any would ...

It is with a heavy heart that I announce that NASA Earth Science Communications has directed The Earth Observer to conduct an ...

The deal secured nearly 17 acres at 117 Red Hill Road in Holmdel as permanent open space and preventing future commercial ...

NASA’s Terra satellite, launched in 1999, is approaching retirement after over 26 years, continuing to provide long-term Earth observations of land, atmosphere, and oceans.