Stars are not perfect spheres owing to centrifugal force. But there's a star about 5000 light-years from here that scientists now say is the roundest natural object ever measured in the universe.
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Those long exposure photos of the night sky that capture details of our galaxy invisible to the naked eye come at a cost. The longer a camera's sensor is active, the warmer it gets, adding unwanted electronic noise to an image. You can go shoot in the freezing temperatures of the arctic to solve the problem, or grab this custom sensor-cooled Nikon D5500.
Some may call it excessive, unreasonable, exhibitionist. What kind of masochist wants to stare at a billion pinpricks of light all at once, anyway? Why, the scientifically inclined one, of course. The astronomer who's hellbent on picking apart the universe and reducing your life to a clump of dust needs absurdly detailed star charts in order to do so.
Video: It's obvious to anyone with eyeballs that there ain't no damn stars in the city, while there are about a gazillion and one out in the countryside. But what do the various gradations of light pollution actually look like? Sriram Murali pointed his camera to the night sky to show you the progression of light pollution and when it starts screwing us from seeing stars.
In 2009, a binary star that had been flaring up for years suddenly exploded, growing millions of times brighter in a cosmic blink. Now, after carefully studying the lead up to and aftermath of the extraordinary event, a team of Polish astronomers describes what happened in a new scientific paper. Basically, a zombie star charged up and went thermonuclear — and it could happen again.
Video: If you want to feel small and get a sense for the awesomely overwhelming scale of the universe and all of its planets and stars and empty space, watch this star size comparison video. It starts with our Moon and then sizes up to planets in our solar system in a line up while also looping in other rocky planets and bright stars to show us how we compare (we don't).
Some 380 light years away in the constellation Scorpius lies a star that has puzzled astronomers for over 40 years. Called AR Scorpii, the star flashes brightly and fades again every couple minutes, like a lightbulb on a dimmer switch. Now, astronomers have identified the cause of the flickering, and it's a reminder that the cosmos is still rife with terrifying secrets.
Last week, we were blown away by a photograph from Mike Mezeul II depicting a storm over White Sands National Monument. We looked in a bit more on Mezeul's portfolio and were amazed at what we saw.
Behold Trumpler 14, a dazzling star cluster located 8000 light-years from Earth. Situated within the Carina Nebula, it's home to one of the highest concentrations of massive, bright stars in the Milky Way. But as spectacular as these stellar objects appear be, their majestic appearance comes at a price.
Video: Light pollution. It really screws up the view. It would be so great if the stars in the sky could still be seen over big metropolitan areas. But it doesn't work like that. You have to go far away from civilisation into deserts and nature to see the stars and cosmos the way they are meant to be seen. David Oliver Lennon wanted to bring the beautiful night sky closer, so he layered the sky in Tasmania on top of the skylines of big cities. It's truly stunning.