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Temporal ratio image formed from two LROC Narrow Angle Camera images (after image divided by the before image) revealing a new 12 meter (~40 foot) diameter impact crater (Latitude: 36.536°N; Longitude: 12.379°E) formed between 25 October 2012 and 21 April 2013, scene is 1300 meters (~4200 feet) wide. New crater and its continuous ejecta are seen as the small bright area in the center, dark areas are the result of material blasted out of the crater to distances much further than previously thought. Image via NASA.

Check out a new lunar crater

Researchers announced last week that our moon is still being hit by a surprising number of meteoroids

This true color image captured by NASA'S Cassini spacecraft before a distant flyby of Saturn's moon Titan on June 27, 2012, shows a south polar vortex, or a mass of swirling gas around the pole in the atmosphere of the moon.

Seasonal change on Saturn’s moon Titan

As the Cassini mission to Saturn prepares for its grand finale, scientists sound nostalgic and thrilled about data on Titan’s changing seasons.


Tracking volcanos on Jupiter’s moon Io

Scientists used earthly telescopes to track hot spots on Io over a period of years and saw that it remains the most volcanically active world in our solar system.

White Sands Missile Range/Applied Physics Laboratory

Today in science: 1st photo from space

On October 24, 1946 – 70 years ago today – a movie camera on board a V-2 rocket captured the first-ever outer space photo of Earth.


Boom! Orbiter spies crash site on Mars

Images from space show a dark spot on Mars’ surface where none was seen before, thought to be where the Schiaparelli lander crashed on Mars last Wednesday.

The six most distant known objects in the solar system with orbits exclusively beyond Neptune (magenta) all mysteriously line up in a single direction. Also, when viewed in three dimensions, they tilt nearly identically away from the plane of the solar system. Batygin and Brown show that a planet with 10 times the mass of the earth in a distant eccentric orbit anti-aligned with the other six objects (orange) is required to maintain this configuration. This diagram was created using WorldWide Telescope. (Credit: R. Hurt / IPAC / Caltech)

More evidence for a 9th planet

Is a hypothetical large planet – far beyond Neptune – causing a tilt in the sun? Plus, evidence for a 9th planet based on “extreme Kuiper Belt objects.”


What is an astronomical unit?

Astronomers use astronomical units – or AU – to describe solar system distances. Definition of AU here. Also, mean distances in AU to prominent solar system objects.

Artist’s impression. Image via James Vaughan.

Asgardia: Space nation or pie in sky?

“I have become citizen number 62 of Asgardia, a new space nation dedicated to expanding peaceful exploration of space for the benefit of humanity.”


Hot Jupiters’ cloudy nights, blistering days

The distant exoplanets known as “hot Jupiters” orbit their stars so tightly that they’re perpetually charbroiled. Plus they keep one face toward their stars.


ESA’s Mars craft landed, but not softly

“We have data coming back that allow us to fully understand the steps that did occur, and why the soft landing did not occur.” Meanwhile, the orbiter is A-OK.

A citizen scientist (Alex Mai) created this image of the sunlit part of Jupiter and its swirling atmosphere using data from Juno's JunoCam instrument. Image via NASA/JPL-Caltech/SwRI/MSSS/Alex Mai.

Juno in safe mode for Jupiter flyby

A sudden safe mode halted planned data collection during the spacecraft’s perijove – or closest point to Jupiter – on October 19. Next perijove December 11.

Taken during the 2015 Perseid meteor shower in August - at Mount Rainier National Park - by Matt Dieterich.  He calls the photo 'Skyfall.'

EarthSky’s meteor shower guide for 2016

Look here for information about all the major meteor showers between now and the year’s end.


Animation: Schiaparelli’s descent to Mars

Computer-generated animation of the descent of the Schiaparelli lander to the surface of Mars. Real one will happen this Wednesday, October 19.


Is asteroid 2016 HO3 a second moon?

No, it orbits the sun. But its orbit keeps it as a constant companion of Earth, and it’ll remain so for centuries to come.

Image via asgardia.space

Asgardia, the nation state of space

Russian businessman Igor Ashurbeyli believes that an orbiting space station has the potential to become a sovereign nation in space.

Image via HubbleSite

Hubble reveals 10 times more galaxies

The universe suddenly looks a lot more crowded, thanks to a deep-sky census assembled from surveys taken by the Hubble Space Telescope and other observatories.

This image, captured with the VISTA infrared survey telescope, shows the central part of the Milky Way. While normally hidden behind obscuring dust, the infrared capabilities of VISTA allow to study the stars close to the galactic centre.

Within this field of view astronomers detected several ancient stars, of a type known as RR Lyrae. As RR Lyrae stars typically reside in ancient stellar populations over 10 billion years old, this discovery suggests that the bulging centre of the Milky Way likely grew through the merging of primordial star clusters. Image via ESO/VVV Survey/D. Minniti

The Milky Way’s ancient heart

Astronomers found RR Lyrae stars at our Milky Way galaxy’s core. They now believe ancient globular star clusters may have merged to form the core of the Milky Way.

Artist view of a planet orbiting two aging stars that exchange material and spiral closer together. Image via Jon Lomberg/ York University.

The fate of worlds orbiting 2 suns

These Tatooine worlds, as they’re called, might be the ultimate survivors, as their 2 stars begin aging in ways that are sometimes threatening or even catastrophic.


Huge gas cloud headed for Milky Way

In about 30 million years, a massive cloud of gas – called Smith’s Cloud – will collide with the Milky Way.

Three friends, planets and Milky Way from a South Carolina beach, by Shreenivasan Manievaannan of Shreeniclix Photography.

Our universe has no direction

The universe isn’t spinning or stretched in any particular direction, according to stringent tests from scientists in London.