Astronomy Picture Of The Day: The universe doesn’t bother with your comfort zone.

 

#NASA, #Space, #astronomy, #διάστημα

Black Hole

@konstructivizm

Out there, the universe doesn’t bother with your comfort zone.Take HD 189733b. It’s a gas giant the color of a deep cobalt marble, floating just 64 light-years away. Look closer and you’ll realize that blue isn’t oceans; it’s clouds made of silicate particles. Winds scream across the planet at 8,700 km/h (Mach 7), fast enough to circle Earth in under five hours. Those winds whip the glass droplets into horizontal storms. It literally rains molten glass sideways. The droplets are so hot they glow faint red before they cool into razor-sharp shards that slice through the atmosphere at hurricane speeds. Bring an umbrella? You’d need one forged from starship hull plating.Then there’s K2-141b, a lava world so close to its star that two-thirds of the surface is a permanent ocean of molten rock at 3,000 °C. The dayside never cools. Rock evaporates into the sky like water on Earth, rises, drifts to the night side, condenses, and falls back as liquid stone rain. Sodium, silicon monoxide, silicon dioxide: everything that makes up granite on Earth is weather here. A full planetary rock cycle, but compressed into hours instead of millions of years. The “rain” hits the magma sea and explodes into vapor again. Eternal, violent, beautiful.These aren’t anomalies. They’re just physics without an atmosphere polite enough to shield life as we know it.We keep scanning the sky for “Earth 2.0” because that’s the postcard we want. Meanwhile the galaxy is stuffed with planets that laugh at our assumptions: worlds where the oceans are liquid iron, where the air is thick enough to swim through, where night falls at 4,000 °C and dawn is a wall of plasma.Water rain is cute. The universe prefers http://variety.Glass hurricanes. Stone monsoons. Rivers of molten metal under ruby-red http://skies.Space isn’t trying to kill you on purpose. It’s just that “habitable” is a tiny, arrogant word when there are billions of other ways to be a planet.(Observations from Hubble, Spitzer, CHEOPS, and extreme climate models out of the University of Toronto and Université de Genève.)