¿DE DÓNDE VIENE EL ORO?
Los elementos más pesados se originan de explosiones de supernovas: esto es cierto hasta el rubidio (nro. atómico 37).
Pero el origen de elementos más pesados aún, como el oro (79), está en las colisiones entre poderosas estrellas de neutrones.
Un🧵👇🏼
Our fleet of cosmic observers investigates the Universe across the electromagnetic spectrum.
These missions enable astronomers to tackle big questions such as the origin & evolution of our Universe, from its early beginnings to the stars and galaxies we observe today.
This month, we're taking a closer look at:
🕵️ Euclid, our dark Universe detective
🎇 Webb, peering farther into our origins
🌀 Hubble, still expanding the frontiers of the visible Universe
✨ Gaia, our billion star surveyor
Ever wonder what happens when you fall into a black hole?
Thanks to a new, immersive visualization produced on a NASA supercomputer, we're kicking off #BlackHoleWeek with a virtual plunge into the event horizon—a black hole's point of no return: https://t.co/aIk9MC1ayK
Captain's Log. Stardate 202404.08
Emotionally saturated by randomness and abandonment of my own self.
Once in a while I cannot describe what I'm felling whit words but whit a song: in this moment is Poull Bojer (solo piano).
https://t.co/pp5YjomHCU
Breaking news!🎉 Today we announce the most precise measurements of our expanding Universe using the BAO signal in 6.1 Million galaxies and quasars from Year 1, tracing dark energy through cosmic time. See @BerkeleyLab PR at https://t.co/3BZm4VQU9A 1/10
📸 Credit: @ClaireLamman
Para tener enemigos no hace falta una guerra, sino fabricarlos. Y en Ecuador, el discurso bélico que maneja el Gobierno Nacional es pretexto perfecto para levantar pasiones, como el antaño patriotismo, porque vende mucho ¿Noboa se excusa en esta sensación para tapar su ineficacia, por ejemplo, tras la fuga de "Fito" o Colón Pico? Mira el editorial a cargo del periodista @CONTREtao
1) Contemplar las decisiones que pusieron a Lasso en el poder.
2) Preguntarse qué puedo hacer yo para destruir el sistema.
3) Resolver la paradoja de por qué seguimos poniendo empresarios en la Presidencia.
4) Exhortar a Lasso a que renuncie.
5) Gritar.
Light and gravitational waves don’t arrive simultaneously
If light and gravitational waves both travel at "c," then why did the first light signal arrive 1.7 seconds after the last gravitational waves from a kilonova event?
Science closes in on the answer.
https://t.co/8C1hd8OBt6
Update! The Resolve detector on @JAXA_en’s XRISM observatory has successfully cooled down for the first time to just about 50 milliKelvin. Just how cold is that? Check out this infographic to see how that temperature compares to more familiar ones. https://t.co/NOY6VHwCwW
BREAKING NEWS
The Royal Swedish Academy of Sciences has decided to award the 2023 #NobelPrize in Physics to Pierre Agostini, Ferenc Krausz and Anne L’Huillier “for experimental methods that generate attosecond pulses of light for the study of electron dynamics in matter.”
Hubble has studied the expansion rate of our universe for decades, but there’s a difference between what is predicted & observed, called Hubble Tension. Nobel Laureate Adam Reiss explains in this video!
New @NASAWebb data confirms Hubble’s measurements: https://t.co/XEcvnYx8aN