The tree-kangaroo lives high in the rainforest canopy, leaping, climbing and revealing a surprising side of marsupial life few have seen.
The post The tree-kangaroo lives in the hidden world of the treetops first appeared on EarthSky. Continue Reading »
Sun news for April 13, 2026: The sun quiets down as solar wind eases. Aurora hopes fade for now, but a fresh coronal hole stream may stir activity by April 15.
The post Sun news: Sun quiets down as solar wind eases first appeared on EarthSky. Continue Reading »
Visible planets and night sky guide. Tomorrow, see the thin waning crescent moon near the horizon about an hour before dawn.
The post Visible planets and night sky guide for April first appeared on EarthSky. Continue Reading »
We think we understand the local universe's expansion rate. But measurements confirm a mismatch that could point to a need for new physics.
The post Universe’s expansion rate: ‘Something doesn’t add up’ first appeared on EarthSky. Continue Reading »
Celebrate dark night skies and limit light pollution by raising awareness with International Dark Sky Week, April 13 to 20, 2026. Find links here.
The post International Dark Sky Week is April 13 to 20 first appeared on EarthSky. Continue Reading »
Three years from now, on April 13, 2029, the asteroid Apophis will zoom safely past the Earth. This much-anticipated event is a "must-see" for all.
The post Asteroid Apophis to sweep close 3 years from tomorrow first appeared on EarthSky. Continue Reading »
Jupiter's large moons - Ganymede, Callisto, Io and Europa - number four. But Saturn has just one large moon, Titan. Why? It may be the planets' magnetic fields.
The post Why do Jupiter’s large moons outnumber Saturn’s? first appeared on EarthSky. Continue Reading »
The Artemis 2 spacecraft and its 4 astronauts safely splashed down in the Pacific Ocean near California at 5:07 last night. Welcome home!
The post Artemis 2 splashdown! Astronauts return safely from historic mission first appeared on EarthSky. Continue Reading »
For the first time, astronomers have direct evidence of a close pair of supermassive black holes in a galaxy. These black holes could merge in 100 years.
The post Supermassive black holes could merge in 100 years first appeared on EarthSky. Continue Reading »
1816 was The Year Without a Summer, following the eruption of Tambora in 1815. The haze was so thick, people could see sunspots with their eyes alone.
The post The Year Without a Summer: The chaos of 1816 first appeared on EarthSky. Continue Reading »
The tree-kangaroo lives high in the rainforest canopy, leaping, climbing and revealing a surprising side of marsupial life few have seen.
The post The tree-kangaroo lives in the hidden world of the treetops first appeared on EarthSky. 
Sun news for April 13, 2026: The sun quiets down as solar wind eases. Aurora hopes fade for now, but a fresh coronal hole stream may stir activity by April 15.
The post Sun news: Sun quiets down as solar wind eases first appeared on EarthSky. 
Visible planets and night sky guide. Tomorrow, see the thin waning crescent moon near the horizon about an hour before dawn.
The post Visible planets and night sky guide for April first appeared on EarthSky. 
We think we understand the local universe's expansion rate. But measurements confirm a mismatch that could point to a need for new physics.
The post Universe’s expansion rate: ‘Something doesn’t add up’ first appeared on EarthSky. 
Celebrate dark night skies and limit light pollution by raising awareness with International Dark Sky Week, April 13 to 20, 2026. Find links here.
The post International Dark Sky Week is April 13 to 20 first appeared on EarthSky. 
Three years from now, on April 13, 2029, the asteroid Apophis will zoom safely past the Earth. This much-anticipated event is a "must-see" for all.
The post Asteroid Apophis to sweep close 3 years from tomorrow first appeared on EarthSky. 
Jupiter's large moons - Ganymede, Callisto, Io and Europa - number four. But Saturn has just one large moon, Titan. Why? It may be the planets' magnetic fields.
The post Why do Jupiter’s large moons outnumber Saturn’s? first appeared on EarthSky. 
The Artemis 2 spacecraft and its 4 astronauts safely splashed down in the Pacific Ocean near California at 5:07 last night. Welcome home!
The post Artemis 2 splashdown! Astronauts return safely from historic mission first appeared on EarthSky. 
For the first time, astronomers have direct evidence of a close pair of supermassive black holes in a galaxy. These black holes could merge in 100 years.
The post Supermassive black holes could merge in 100 years first appeared on EarthSky. 
1816 was The Year Without a Summer, following the eruption of Tambora in 1815. The haze was so thick, people could see sunspots with their eyes alone.
The post The Year Without a Summer: The chaos of 1816 first appeared on EarthSky.