Ethan Siegel – Medium

Ethan Siegel

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Starts With A Bang!

Jupiter endangers Earth, and may have extincted the dinosaurs

65 million years ago, a massive asteroid struck Earth. Not only did Jupiter not stop it, but it most likely caused the impact itself.

9h ago

Jupiter endangers Earth, and may have extincted the dinosaurs

9h ago

Published in

Starts With A Bang!

The top quark isn’t a loner after all: “toponium” is real!

Can the top quark, the short-lived particle of all, bind with anything else? Yes it can! New results at the LHC demonstrate toponium…

1d ago

The top quark isn’t a loner after all: “toponium” is real!

1d ago

Published in

Starts With A Bang!

Humanity’s third interstellar object, 3I/ATLAS, is arriving now

First ‘Oumuamua, then Borisov, and now ATLAS have shown us that interstellar interlopers are real. Here’s what the newest one teaches us.

2d ago

Humanity’s third interstellar object, 3I/ATLAS, is arriving now

2d ago

Published in

Starts With A Bang!

Did JWST catch the Ring Nebula forming new planets?

Our nearby Ring Nebula, with JWST’s eyes, shows evidence for planet formation. Will the Sun eventually destroy, and then replace, the…

3d ago

Did JWST catch the Ring Nebula forming new planets?

3d ago

Published in

Starts With A Bang!

Starts With a Bang podcast #119 — The CMB

The relic signal that first proved the Big Bang has been known and analyzed for 60 years. Join us at the frontiers of modern cosmology!

5d ago

Starts With a Bang podcast #119 — The CMB

5d ago

Published in

Starts With A Bang!

Ask Ethan: Could the CMB arise from galaxies, not the Big Bang?

The CMB has long been considered the Big Bang’s “smoking gun” evidence. But after what JWST saw, might it come from early galaxies instead?

6d ago

Ask Ethan: Could the CMB arise from galaxies, not the Big Bang?

6d ago

Published in

Starts With A Bang!

A unique mission to both Uranus and Neptune could launch in 2034

Once every 12 years, Earth, Jupiter, Uranus, and Neptune all line up, opening a window for a joint mission. Our next chance arrives in…

Jul 10

A unique mission to both Uranus and Neptune could launch in 2034

Jul 10

Published in

Starts With A Bang!

Will American science become the “Hitler’s gift” of the 21st century?

Over the first half of 2025, the USA has cut science as never before. This disaster for American science is a gift to the rest of the…

Jul 9

Will American science become the “Hitler’s gift” of the 21st century?

Jul 9

Published in

Starts With A Bang!

JWST’s early galaxies didn’t break the Universe. They revealed it.

Originally, the abundance of bright, early galaxies shocked astronomers. After 3 years of JWST, we now know what’s really going on.

Jul 8

JWST’s early galaxies didn’t break the Universe. They revealed it.

Jul 8

Published in

Starts With A Bang!

5 ways our naked-eye views of the night sky deceive us

Looking at a dark, night sky has filled humans with a sense of awe and wonder since prehistoric times. But appearances can be deceiving.

Jul 7

5 ways our naked-eye views of the night sky deceive us

Jul 7

Ethan Siegel

Ethan Siegel

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.

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