Exquisite Exoplanetary Art
They’re alien worlds orbiting distant stars far out of reach of detailed imaging by even our most advanced telescopes. And yet, day after day, we see vivid imaginings of these extrasolar planets with the help of the most talented space artists.
The definition of an extrasolar planet — or “exoplanet” — is simply a planetary body orbiting a star beyond our solar system, and nearly 700 of these extrasolar worlds have been discovered so far (plus hundreds more “candidate” worlds).
So, with the flurry of recent exoplanet discoveries, Discovery News has collected a few of the dazzling pieces of art born from one of the most profound searches mankind has ever carried out: the search for alien worlds orbiting other stars; a journey that may ultimately turn up a true “Earth-like” world.
1. The Transit
As an exoplanet passes in front of its star as viewed from Earth, a very slight dip in starlight brightness is detected. Observatories such as NASA’s Kepler space telescope use this “transit method” to great effect, constantly detecting new worlds.
2. Crazy Aurorae
Planets with a global magnetic field, like Earth, have some dazzling interactions with the winds emanating from their stars. The high-energy particles bombard the planet’s atmosphere after being channeled by the magnetism. A wonderful auroral lightshow ensues.
But say if there’s an exoplanet, with a magnetosphere, orbiting really close to its star? Well, stand back! The entire world would become engulfed in a dancing show, 100-1000 times brighter than anything we see on Earth.
3. Angry Suns, Naked Planets
Exoplanets come in all sizes and all states of chaos. Some might have wonky orbits, others might be getting naked. Other times, they’re simply being ripped apart by X-rays blasted from their parent star. Bummer.
Super-Earths get a lot of press. Mainly because “Earth” is mentioned. Sadly, most of these worlds are likely completely different to anything we’d call “Earth.” And you can forget calling the vast majority of them “Earth-like.” It’s simply a size thing — they’re bigger than Earth, yet a lot smaller than Jupiter, hence their name, “super-Earth.” Easy.
(Source: news.discovery.com)152 notes
Posted on Saturday, 12 May
Tagged as: space astronomy Science art
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