Ethan Siegel
Science Writer at Freelance
Host at Starts With A Bang podcast
"Some blogger who doesn’t even write a single paper in a decade." #Cosmology Science writer, astrophysicist, author, communicator. He/him or they/them.
Articles
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4 days ago |
medium.com | Ethan Siegel
Many were hoping that JWST would find the first stars of all. Despite many hopeful claims, it hasn’t, and probably can’t. Here’s how we can. It was only three short years ago that we still lived in the Hubble era, with the most distant object then discovered being galaxy GN-z11, whose now-arriving light was emitted just 420 million years after the Big Bang.
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4 days ago |
bigthink.com | Ethan Siegel
Travel the universe with Dr. Ethan Siegel as he answers the biggest questions of all. If you had asked any informed astronomer about the fate of our galaxy here in the 21st century, you would have gotten a near-universal story from practically all of them: in about four billion years, the Milky Way would merge with the only galaxy larger than itself in the entire Local Group, Andromeda.
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5 days ago |
bigthink.com | Ethan Siegel
Travel the universe with Dr. Ethan Siegel as he answers the biggest questions of all. Just like Germany in 1933, the US government is actively destroying science today. These ten historical quotes remind us of science’s unique, irreplaceable societal value. 1.) “Scientists do not discover in order to know, but rather, they know in order to discover.” -Alfred Whitehead2.) “Believe those who seek the truth.
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1 week ago |
medium.com | Ethan Siegel
Here in our Universe, time passes at a fixed rate for all observers: one second-per-second. Before the Big Bang, things were very different. As far back as we can observe in our Universe, time always behaved in exactly the same fashion we’re familiar with: ticking away, relentlessly, at the same rate for all observers. Bring your clock to the surface of the Earth? The bottom of the ocean? Into orbit in space? Near the event horizon of a black hole?
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1 week ago |
bigthink.com | Ethan Siegel
Travel the universe with Dr. Ethan Siegel as he answers the biggest questions of all. Here in our own Solar System, it’s normal matter that dominates the massive objects we observe and measure. Humans, planets, moons, and even the Sun are all made up of the same types of ingredients at their core: protons, neutrons, and electrons, bound together into various nuclei, atoms, molecules, and even grander structures.
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For those of you who would love to listen to my interview with @hsocasnavarro for @pcoffeebreak but wished it were in English, here is the original audio in English! https://t.co/DQGXjeMKKf
This is so cool: I did an episode of @pcoffeebreak with the inimitable @hsocasnavarro, and he heroically translated our conversation into Spanish! Have a listen and watch on YouTube: https://t.co/PVgTHKImXG Or, for the take-anywhere version, Spotify: https://t.co/GKV7Vw10Ub
Earlier this week, I gave a talk about JWST to the RASC Toronto audience through York University, and it has the latest and greatest of its discoveries inside, including the new cosmic record-holder for most distant galaxy: MoM-z14. Check it out! https://t.co/QpNpzmdXL9