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This is what the first stars looked like as they were being born

This is what the first stars looked like as they were being born
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Tom abelRalf kaehlerStanford kavli institute for particle astrophysicsKavli instituteParticle astrophysicsJames webb space telescope

Are the missing baryons simply too hot to see?

There are two types of missing, or "dark" matter: baryonic (made of normal matter) and non-baryonic. Have we finally found the normal stuff?

United statesJoseph depasquale stscTom abelIrvinet fangGlrx wikimedia commonsTsaghkyan wikimedia commonsKailash sahu stscDavida aguilarStanfordi zhuravlevaRalf kaehlerIllustris collaboraitonMax planck institute for astrophysicsNational accelerator laboratoryExtreme deep fieldOliver hahnMilky way

Comments of the Week #72: On Dark Matter, Black Holes, Starlight and more!

“I would rather be ashes than dust! I would rather that my spark should burn out in a brilliant blaze than it should be stifled by dry-rot. I would rather be a superb meteor, every atom of me in magnificent glow, than a sleepy and permanent planet. The function of man is to live, not to exist. I shall not waste my days trying to prolong them. I shall use my time.” -Jack London

Chris manneringJack londonMatt heverlyTatsuya tanakaJ tumlinson stscRalf kaehlerMichael kelseyDavid kinghamTom abelOliver hahnNational maritime museumGerard lemson the virgo consortiumStarts withMeteor showersSolar systemArianna di cintio

Ask Ethan #100: Why doesn t dark matter form black holes? (Synopsis)

“All enterprises that are entered into with indiscreet zeal may be pursued with great vigor at first, but are sure to collapse in the end.” -Tacitus If you want to form a structure like a planet, star or black hole, you need a large amount of mass together in one place. The way to bring that mass together, of course, is through the force of gravity, which attracts everything with mass towards one another in this Universe.

Tom abelOliver hahnRalf kaehler

Merging Neutron Stars Deliver Deathblow To Dark Matter And Dark Energy Alternatives

"Dark matter is interesting. Basically, the Universe is heavier than it should be. There's whole swathes of stuff we can't account for." -Talulah Riley

Emre kahyaBekenstein teveShantanu desaiRalf kaehlerRichard woodardSibel boranOliver hahnTom abelTalulah rileyDark matter

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