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Colorado High

If you ever wonder why I love living in Colorado, well, maybe this’ll help. That video was shot by Daniel Lowe as he drove through western Colorado and eastern Utah. Where I live there’s substantial light pollution, but out by Gunnison...Show More Summary

Charon Surface Texture for Celestia

18 hours agoAcademics / Astronomy : Astroblog

Charon simulated in Celestia with the Charon Global Map used to generate the Charon texture. Click to embiggenThe Charon Global Map has just been released to complement the Pluto Global Map, so I resized it (1024x512) and converted it...Show More Summary

Southern Skywatch August 2015 edition is now out!

18 hours agoAcademics / Astronomy : Astroblog

North-western evening sky at 6:15 pm as seen from Adelaide on August 7, Mercury and Jupiter are less than a half a finger-width apart. The August edition of Southern Skywatch is now up.This month starts with some excellent planetaryShow More Summary

The Latest Crash Course Astronomy Will Be Delayed

My apologies, everyone: After we put up this week’s episode of Crash Course Astronomy (about exoplanets), we found an error in one of the animations that got past us. In some cases where a mistake is found we can simply annotate the video and move on. Show More Summary

Giant old galaxies, not Milky Ways, are best for life to thrive

Looking at how quickly stars form can nail down the galaxies that should be best for life – and our own doesn't come out on top

Pretty pictures of the Cosmos: Star stream

Award-winning astrophotographer Adam Block presents the first-ever high-resolution color images of the "star stream halo" of the spiral galaxy NGC 4414.

Our Global Volunteers: July 2015 Update

The Planetary Society's volunteers around the world have been busy these past few months, with all the excitement surrounding Asteroid Day, the LightSail test mission, the New Horizons and Dawn missions, and other space milestones!

Game of Thrones Could Go Eight Seasons

There could also be a prequel, maybe Trending game of thrones Jon Snow

Arc of Truth

I was out strolling recently on a cloudy day, and—as I always do—I took a quick look around the sky to see if anything interesting was to be seen. I do so love that habit. This particular time, I was greeted with a most unusual sight: a rainbow segment, just a small arc levitating in the clouds. Show More Summary

Rosetta’s Philae Lander Discovers a Comet’s Organic Molecules

Analysis of data from the Philae lander has provided insight into the composition, structure and properties of Comet 67P/Churyumov–Gerasimenko.

Aurora Watch (31 July-1 August) and Blue Moon

An Aurora watch and a geomagnetic alert has been issued by the Australian IPS for 31 July to 1 August due to a coronal hole solar wind stream. This could translate into aurora at any time during the night time of the 17th to early morning 18th. Show More Summary

#RosettaWatch: Philae lander reveals comet 67P’s fluffy surface

Comet 67P has previously unseen organic molecules and fluffy surface grains – just a few of the discoveries in the first set of papers from the Philae team

Ancient crystals show Earth’s magnetic field switched on early

Earth needed its magnetic field to protect the nascent atmosphere – but when did the field turn on? Magnetic rocks show it was earlier than we thought

In So Many Words: minute world with big stories to tell

In so many words is where we retell our stories on space and physics using only the 1000 commonest words in English

Is Pluto a planet or a dwarf? Such labels matter less and less

Our planetary distinctions are crumbling as we continue to uncover incredible diversity in celestial objects, says Jeff Hecht

Dawn Journal: Descent to HAMO

With a wonderfully rich bounty of pictures and other observations already secured, Dawn is now on its way to an even better vantage point around dwarf planet Ceres.

The Summer of ’82

David: You knew enough to tell Saavik that how we face death is at least as important as how we face life. Kirk [sadly, resigned]: Just words. David: But good words! That's where ideas begin. In June of 1982, I found myself waiting in a long, long line at a mall. Show More Summary

Pluto team name features after Dr Who and Star Trek

This is a post from Skymania News - Space and astronomy news and advice plus night sky NASA'S New Horizons team have named newly discovered landmarks on Pluto's largest moon in honour of scifi shows including Doctor Who and Star Trek. The...Show More Summary

Comet C/2014 Q1 from Australia (30 July - 6 August 2015)

The evening sky at 700 pm ACST looking west as seen from Adelaide from 30 July to 6 August. The circles show successive positions of Comet C/2014 Q1 PanSTARRS every two days. Similar views will be seen elsewhere in Australia at equivalent local times. Show More Summary

Neptune’s sudden jolt could explain weird ring in Kuiper belt

A band of strangely tight-knit icy objects in the Kuiper belt has defied explanation. Now a simulation rewinding the solar system to its babyhood has an answer

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