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Ethan Siegel

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Starts With A Bang!

Starts With A Bang podcast #115 — Dwarf galaxies in isolation

The tiniest galaxies of all are the most susceptible to violence by their larger, bullying siblings. That’s why we need them in isolation.

5h ago

Starts With A Bang podcast #115 — Dwarf galaxies in isolation

5h ago

Published in
Starts With A Bang!

Ask Ethan: Why do galaxies still collide in the expanding Universe?

The Universe is expanding, and individual, bound structures are all receding away from one another. How, then, are galaxies still…

1d ago

Ask Ethan: Why do galaxies still collide in the expanding Universe?

1d ago

Published in
Starts With A Bang!

Confirmed at last: exoplanets found around nearest single star

Barnard’s star, the closest singlet star system to ours, has long been a target for planet-hunters. We’ve finally confirmed it: they exist!

2d ago

Confirmed at last: exoplanets found around nearest single star

2d ago

Published in
Starts With A Bang!

Why invest in fundamental research? A former Nazi explains

Back in 1970, sister Mary Jucunda wrote NASA, decrying large investments in science. A former Nazi’s legendary response is still relevant.

3d ago

Why invest in fundamental research? A former Nazi explains

3d ago

Published in
Starts With A Bang!

Scientists have definitively taken us beyond the Big Bang

Since the dawn of history, humans have pondered our ultimate cosmic origins. Now in the 21st century, science has gone beyond the Big Bang.

4d ago

Scientists have definitively taken us beyond the Big Bang

4d ago

Published in
Starts With A Bang!

Surprising stars reveal second-closest supermassive black hole

Just 165,000 light-years away, the Large Magellanic Cloud is suspected to house a supermassive black hole. At last, evidence has arrived.

5d ago

Surprising stars reveal second-closest supermassive black hole

5d ago

Published in
Starts With A Bang!

Ask Ethan: Does the multiverse explain our fundamental constants?

There are some 26 fundamental constants in nature, and their values enable our Universe to exist as it does. But where do they come from?

Mar 14

Ask Ethan: Does the multiverse explain our fundamental constants?

Mar 14

Published in
Starts With A Bang!

There are 7 states of matter; “topoconductor” isn’t one of them

Under extreme conditions, matter takes on properties that lead to remarkable, novel possibilities. Topological superconductors included.

Mar 13

There are 7 states of matter; “topoconductor” isn’t one of them

Mar 13

Published in
Starts With A Bang!

How JWST puts the squeeze on light dark matter, for free

One of the most promising dark matter candidates are light particles, like axions. With JWST, we can rule out many of those options…

Mar 12

How JWST puts the squeeze on light dark matter, for free

Mar 12

Published in
Starts With A Bang!

The truth about banning “dangerous gain-of-function” research

A new bill introduced into the US Senate claims to make us safer. Instead, it would destroy all virology research, and for no real cause.

Mar 11

The truth about banning “dangerous gain-of-function” research

Mar 11

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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