Is this cool or what? Time-lapse video from International Space Station astronaut Tim Peake.
Rocky planets orbiting other stars have interiors similar to Earth’s, with a thin outer crust, thick mantle, and Mars-sized core, says a new study.
If they’ve been detected, we have a whole new way of looking at the universe. Unanticipated discoveries, unexpected marvels, ahead.
Characterized as a peculiar galaxy, NGC 1487 is an elaborate cosmic whirl likely formed when several dwarf galaxies merged.
Scientists are traveling to Tibet this summer to explore places that might be possible earthly analogs to regions on Mars once suitable for life.
During the Great Meteor Procession of February 9, 1913, bright meteors were seen to cross the sky on stately, nearly identical paths.
On some moonless night, look for the Orion Nebula below Orion’s Belt. Your eye sees it as a tiny, hazy spot. But it’s a vast region of star formation.
It’ll have 7 times the collecting area of Hubble, and it’s scheduled for launch in 2018. James Webb Space Telescope … and more on this episode of EarthSky News.
First time we can see 5 planets at once since 2005. All 5 are up before dawn, still, and all 5 will remain visible until Mercury disappears in the dawn just after mid-February.
The hills are thought to be fragments of Pluto’s rugged uplands that have broken away and are being carried along the flow paths of glaciers.
At west quadrature on February 7, 2016, the red planet appears 90% illuminated as seen through a telescope. Fantastic time to see Mars is just ahead.
You can see all 5 bright planets – Mercury, Venus, Saturn, Mars and Jupiter – together in the sky before dawn, through mid-February.
Finding star distances isn’t easy. Here’s how it’s done, and why astronomers recently modified the distance estimate to the famous star Betelgeuse.
On this episode of EarthSky News, an update on the idea that the early Earth collided with a Mars-sized proto-planet to make the moon. That and more. Join us.
An astrophysicist says our Milky Way may already be dead, but is still going. Why do galaxies stop forming stars, change their shape and fade away?
This is the 110th anniversary of Clyde Tombaugh’s birth. He was a farm boy who loved astronomy and ultimately discovered Pluto. Planets X and Pluto, here.
Low density of comets suggested there might be huge empty caves honeycombed throughout their interiors. Maybe true for some, but not so for Rosetta’s comet.
The asteroid will pass closest to Earth on March 5. Will it pass millions of miles away, or as closely as 11,000 miles (17,000 km)?
It shows a giant jet of particles extending 300,000 light-years, blasting from a black hole at the center of a distant galaxy.
NASA TV will broadcast live coverage of a 5.5-hour spacewalk by two Russian cosmonauts aboard ISS beginning at 7:30 a.m. ET (1230 UTC) Wednesday.
The most opaque parts of Saturn’s rings – the parts that look most dense – don’t always contain more material. Another great Saturn mystery!