Incredible images of Saturn's Rings from Cassini

As the Cassini spacecraft continues it's death spiral into Saturn it is returning some fantastic new views of that planet's ring system.

NASA/JPL-Caltech/Space Science Institute

NASA/JPL-Caltech/Space Science Institute

Head on over to Universe Today for some stunning images and descriptive story.

Get Your Iridium Fix Before It’s Too Late!

Ever seen an Iridium flare?  Don't know what they are?  Iridium flares are the sudden increase in intensity of sunlight bouncing off the highly reflective surfaces of the Iridium communications satellites, and they are awesome to see.  But, the window of opportunity to see them is closing as the replacement Iridiums are already being sent up (SpaceX’s Falcon 9 delivered the first 10 of a new generation of Iridium NEXT satellites to low-Earth orbit back on January 14th)  and these will not produce the famous flares.

Complete story and guide to how to locate and view the flares can be found at Sky And Telescope.

Metallic Hydrogen? Really!!

Silvera et al., Science

We all learned in school that hydrogen, the simplest of all elements (one proton, one electron), is a gas - lighter than air, and abundant in the universe.  In fact the early universe was only hydrogen, but that's another story.  But years ago scientists speculated and theorized that under the proper conditions (very cold temperatures and high pressure) hydrogen could become a metal - yes, a metal.

Well, more than 80 years after it was first predicted, physicists have actually created metallic hydrogen - a mysterious form of hydrogen that could be capable of superconducting electricity without resistance at room temperature.  Really amazing stuff considering that this is something that has never existed before!

Read the complete story over at Science Alert.

In the quantum vacuum, no one can hear you scream.

Physicists say they've manipulated 'pure nothingness' and observed the fallout

ktsdesign/Shutterstock.com

According to quantum mechanics, a vacuum isn't empty at all. It's actually filled with quantum energy and particles that blink in and out of existence for a fleeting moment - strange signals that are known as quantum fluctuations.

For decades, there had only ever been indirect evidence of these fluctuations, but back in 2015, researchers claimed to have detected the theoretical fluctuations directly. And now the same team says they've gone a step further, having manipulated the vacuum itself, and detecting the changes in these strange signals in the void.

Full story at:  Science Alert

SpaceX Does it Again

VANDENBERG AIR FORCE BASE, Calif. — SpaceX launched 10 satellites to orbit today (Jan. 14) in a rousing return-to-flight mission that also included a rocket landing on a ship at sea.

SpaceX - First stage of Falcon-9 on drone ship after today's launch

Complete story and fantastic video footage of the launch and spot-on landing of the Falcon-9 first stage can be seen at:  Space.com

Star Explosion Predicted in 2022!

Luminous Red Nova:  a stellar explosion thought to be caused by the merging of two stars. They are characterized by a distinct red color, and a light curve that lingers with resurgent brightness in the infrared. Luminous red novae are not to be confused with standard novae, explosions that occur on the surface of white dwarf stars.

WikiPedia

This is Larry Molnar and team’s model of the double star system KIC 9832227. The 2 stars are so close, they’re touching. They are an eclipsing binary as seen from Earth, meaning we see one star pass in front of the other with each spin of the system. Image via Calvin.edu.

Wouldn't it be great to be able to see a nova occur in our lifetime.  They occur fairly often in galaxies throughout the universe, but for stars in our galaxy, the chances are much smaller.  The last one was in 1987, which actually occurred in the Large Magellanic Cloud, a sister galaxy of our own Milky Way. 

Novae that occur close (within the galaxy) would appear very bright;  and supernovae would shine bright enough to be visible in broad daylight and would appear much brighter than the moon at night.  Luminous Red Novae would be dimmer but would still create a easy to see 'new star' in the night sky, outshining many of our existing constellation stars.

Well maybe we will get to see such an explosion.  Astronomer Larry Molnar and his colleagues and students have made an unprecedented prediction of a star explosion – due in the year 2022, or thereabouts, they say – that’ll become visible from Earth, even to those without telescopes. The star system is an eclipsing binary system (one star passes in front of the other as seen from Earth) called known as KIC 9832227. New evidence suggests that these two very close stars are getting closer and will merge explosively, soon. Molnar is presenting his findings today (January 6, 2017) at the 229th meeting of the American Astronomical Society in Texas. 

The full story can be read at EarthSky.org

Astrophotography by Mikey - The Best of 2016

Another year, another collection of astrophotos.

Head on over to https://www.youtube.com/watch?v=cUQ2FUAy6gg for the latest from Mikey.