Spacecraft observations reveal plasma waves moving from Saturn to its rings and its moon Enceladus. Researchers converted a recording of the plasma waves into an audible cosmic whoosh that you’ll enjoy.
Beloved astronomer Guy Ottewell announces his newest book.
. | Uranus spins on its side with respect to the plane of the solar system, via Guy Ottewell.
Photos from EarthSky friends around the world of Sunday evening’s spectacular moon and planet Venus, and Saturday’s moon and Mercury. Thanks to all who submitted or posted to our Facebook page! Miss then? Try again Monday.
Thom Luxford caught the pair from White Rock, British Columbia with an iPhone 5s in panorama mode.
Robot orbiters circling Mars have acquired images of ghost dunes. They’re pits where, scientists believe, tall crescent-shaped sand dunes once existed on this red desert world.
"Ghost dunes" in Noctis Labyrinthus on Mars. The crescent-shaped pits are the remains of active barchan-type dunes from billions of years ago. Image via Mackenzie Day/David Catling/AGU
With the long-running Delta Aquariid meteor shower already in progress, and the moon in a waxing crescent phase – and gone from the sky after midnight – we’re beginning to receive meteor photos.
David S. Brown caught this meteor on July 30, 2014, in southwest Wyoming.
A new infrared instrument on a telescope in Hawaii will let astronomers find more exoplanets orbiting red dwarf stars. The discoveries may include rocky worlds that are potentially habitable.
A test observation by IRD of red dwarf GJ 436. Comparing the star's spectrum (broken line) to the laser frequency comb (dots) allows researchers to calculate the motion of the star. Image via NINS Astrobiology Center.
Last week, scientists announced the 1st known source for ghostly, high-energy neutrinos. The source is a blazar, a billion-solar-mass black hole 3.7 billion light-years away. The discovery establishes a new way to study the universe.
Mysterious ‘Oumuamua is the 1st confirmed interstellar object to pass through our solar system.
Artist impression of the interstellar object ‘Oumuamua. Image via ESA/Hubble, NASA, ESO, M. Kornmesser.
The best time to see Mars since 2003 is now! Watch for Mars as the extremely bright red “star,” ascending in the east by mid-evening and crossing the sky for the rest of the night. Photos from the EarthSky community here.
Mars on July 14, from Johnnyxbox Childers, who wrote: "Bright Mars captured in the wee minutes of Saturday, while practicing new photographic techniques."