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Backward world? Rubin finds a retrograde object past Neptune
The Rubin Observatory in Chile has discovered a retrograde object in our solar system. It circles the sun in a highly inclined orbit beyond Neptune. The post Backward world? Rubin finds a retrograde object past Neptune first appeared on EarthSky .
Carl Sagan born 92 years ago tomorrow
Carl Sagan, born November 9, 1934, brought astronomy to millions through books and the TV series Cosmos. He also helped create messages from Earth for the Pioneer and Voyager spacecraft. The post Carl Sagan born 92 years ago tomorrow first appeared on EarthSky .
Do we all see the same moon phase from Earth?
No matter where you are on Earth, we all see the same moon phase. So why can the moon look tilted, or even upside down, depending on where you are? The post Do we all see the same moon phase from Earth? first appeared on EarthSky .
Active volcanoes on Mars? Noxious gas discovery says — maybe
Are there still active volcanoes on Mars? New detections of hydrogen chloride from below the surface suggest flowing magma. The post Active volcanoes on Mars? Noxious gas discovery says — maybe first appeared on EarthSky .
Traces of dinosaur blood found for the 1st time?
For the 1st time, scientists say they've found traces of dinosaur blood. It comes from a 115-million-year-old fossil dinosaur bone from Brazil. The post Traces of dinosaur blood found for the 1st time? first appeared on EarthSky .
The constellation Andromeda the Chained Lady
is most famous for containing M31, the Andromeda Galaxy, the closest large spiral galaxy to the Milky Way. The post The constellation Andromeda the Chained Lady first appeared on EarthSky .
Hera mission begins asteroid defense investigation: 1st close-up views!
The Hera mission just got its 1st closeup view of Didymos and its little moonlet Dimorphos. Soon it will begin investigating the aftermath of the DART impact. The post Hera mission begins asteroid defense investigation: 1st close-up views! first appeared on EarthSky .
The moon and Jupiter play hide-and-seek. More pics here!
The moon and Jupiter played hide-and-seek on November 3, 2026. And they'll pair up again at the end of the month! Find out more. The post The moon and Jupiter play hide-and-seek. More pics here! first appeared on EarthSky .
ESCAPADE mission to fly past Earth twice in 2 days
On November 7 and 9, 2026, the twin probes of the ESCAPADE mission — first Blue and then Gold — will perform flybys of Earth on the way to Mars. The post ESCAPADE mission to fly past Earth twice in 2 days first appeared on EarthSky .
Dark nebulae are star-obscuring clouds of gas and dust
Dark nebulae are clouds of gas and dust in space. They block the light of stars shining behind them. Often, they're locations where new stars are forming. The post Dark nebulae are star-obscuring clouds of gas and dust first appeared on EarthSky .
A new mini-moon for Earth! Meet 2026 QQ8
Earth has another new mini-moon! The little space rock 2026 QQ8 began orbiting Earth in April and will stay through 2026. The post A new mini-moon for Earth! Meet 2026 QQ8 first appeared on EarthSky .
Pegasus the Flying Horse, and the best sky story ever
Pegasus the Flying Horse is the 7th largest constellation. It dominates fall skies in the Northern Hemisphere and has a famous asterism called the Great Square. The post Pegasus the Flying Horse, and the best sky story ever first appeared on EarthSky .
Crew emerges from Mars habitat simulation after yearlong test
On October 31, 2026, 4 participants in NASA's Mars habitat simulation emerged after 1 year of testing for what astronauts might encounter on a visit to Mars. The post Crew emerges from Mars habitat simulation after yearlong test first appeared on EarthSky .
When will the Blaze Star erupt? Will neutrinos give us a warning?
Astronomers are still waiting for the Blaze Star to erupt. New research suggests neutrinos could provide an early warning of its next outburst. The post When will the Blaze Star erupt? Will neutrinos give us a warning? first appeared on EarthSky .
Dark sky conference: Under One Sky, November 6-7
On November 6-7, 2026, DarkSky International will hold a virtual dark sky conference called Under One Sky. Learn more about it and light pollution here. The post Dark sky conference: Under One Sky, November 6-7 first appeared on EarthSky .
How to see Earth’s shadow at sunrise and sunset
Just before sunrise and after sunset, you can spot Earth's shadow. Look west at sunrise and east at sunset. Learn more about Earth's shadow here. The post How to see Earth’s shadow at sunrise and sunset first appeared on EarthSky .
Swift spacecraft fiery reentry will be in the next 2 days
The Swift spacecraft is falling back to Earth. It will likely burn up in our atmosphere on November 3 or 4. Will you see it? The post Swift spacecraft fiery reentry will be in the next 2 days first appeared on EarthSky .
Did comets seed life on Earth? A new study says — probably not
Did comets seed life on Earth? It's unlikely, a new study from the University of Cambridge says. It would have been a very rare occurrence. The post Did comets seed life on Earth? A new study says — probably not first appeared on EarthSky .
Do black holes split into smaller black holes?
Black holes sometimes merge. But could 1 split into 2 or more? A new study explores the conditions that might allow it, including extremely rapid rotation. The post Do black holes split into smaller black holes? first appeared on EarthSky .
Did the Viking 2 lander detect marsquakes in 1976?
New analysis shows that 2 possible marsquakes detected by Viking 2 were in the same region as nearly 1,000 others detected by the InSight lander decades later. The post Did the Viking 2 lander detect marsquakes in 1976? first appeared on EarthSky .
In the directory since 25 Sept 2026 · last checked 9 Nov 2026 · RSS