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Katie Mack

9 quotesAstrophysicist · Female

All Astronomy (6)Space (6)astronomical terms (4)Stars (4)Universe (3)Climate Change (2)Government (2)Global Warming (2)Politics (2)space terms (1)Solar System (1)Sun (1)Science (1)History (1)Cosmos (1)

Global warming doesn’t mean every day is hot as the surface of the Sun from now on. Winter still happens & occasionally some of us will be very cold. If you want consistently hot global temps. though it is only a matter of (a very long) time until the Sun swells to its red giant phase On the scale…

Global Warming Climate Change Universe Cosmos

There are something like a trillion galaxies in the observable universe, of a range of sizes. And galaxy collisions happen a lot. In fact, galaxies primarily grow by cannibalizing other (smaller) galaxies. Our own has eaten several—we can see streams of stars as debris. In fact, galaxies primarily…

Space Astronomy Universe Solar System Stars

I mean OK the fact that we can WATCH THE SUN VIBRATE & figure out what’s inside, that’s cool, but we can also do this for OTHER STARS. It’s called asteroseismology & it’s kind of blowing my mind today.

Space Astronomy Sun

A 'hypernova' is a supernova (exploding star), but, like, more so. (It’s defined as being any supernova that’s at least 10 times as luminous as usual.)

Space Astronomy astronomical terms Stars Star

A 'cataclysmic variable' is where a compact dense white dwarf star is in a binary orbit with a bigger puffier star & the WD (white dwarf) rips material off its companion & that material detonates on the WD’s surface.

Space Astronomy astronomical terms Stars

'Violent relaxation' comes from highly technical uses of both those terms. “Relaxation” referring to a system (eg, stars in a cluster) achieving some equilibrium (steady) state, and “violent” meaning rapid. It can happen when mass comes together quickly gravitationally.

Space Astronomy astronomical terms Stars

When people say 'never again' they don't mean 'we must prevent the literal resurrection of Hitler.' They mean "watch for similar circumstances"

Politics Government History repeating history Never Again

'Spaghettification'” is what happens to you when you fall into a black hole feet first (for instance) and the gravity is so much stronger on your feet than your head that you’re stretched out to some kind of spaghetti-like carnage-shape.

Space space terms Universe astronomical terms Astronomy

Stating scientific facts about the atmosphere of our planet is not and must not be 'politics.' Reality should not be a political stance. If someone's political stance requires preventing scientists from informing you about your own planet, that's not politics, it's oppression.

Reality Science Climate Change Global Warming Politics

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