Профиль

Ethan Siegel

Cosmologist, science communicator, author, speaker, and longtime writer of Starts With A Bang. Not the next Carl Sagan; the first Ethan Siegel.

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Публикации

The 20 biggest cosmic discoveries of the last 20 decades 200 years ago, we didn't even know what the stars were, much less what the Universe was. These 20 big steps, one per decade, help illustrate exactly how we got here. bigthink.com/starts-with-... #space #astro #cosmology

The 20 biggest cosmic discoveries of the last 20 decades200 years ago, we hardly knew anything about our Universe on cosmic scales. Today, there's so much that we know. Here's how we arrived.bigthink.com

The rare quantum reason that neutral atoms are possible If atoms only de-excited conventionally, emitting ultraviolet photons when they dropped into the lowest-energy state, the Universe would have become neutral when it did. Here's how it happened. bigthink.com/starts-with-... #space #physics

The rare quantum reason that neutral atoms are possibleEarly on, the entire Universe was ionized. Without the forbidden two-photon transition, it would have remained that way for far too long.bigthink.com

Ask Ethan: Should we stop worrying about vacuum decay? Vacuum decay is one of the most frightening, and undetectable-until-it-happens, possibilities for how this will all end. But if we learn enough, there could be a way to stop it. bigthink.com/starts-with-... #space #physics #cosmology

Ask Ethan: Should we stop worrying about vacuum decay?Our Universe has a positive, non-zero value to the energy within empty space. Can we potentially save ourselves by considering vacuum decay?bigthink.com

4 myths cause us to abandon science. Here’s the path back. Four myths about how "science is flawed" cause people to choose conspiratorial thinking instead. That's the path to fraud, grift, and misinformation. Here's the way back. bigthink.com/starts-with-... #science #information #lies #myths

4 myths cause us to abandon science. Here's the path back.It’s not a gambit. It’s not fraud. It’s not driven by opinion, prejudice or bias. It's not unchallengeable. And it's more than facts alone.bigthink.com

So many great publications, with so many important writers who focus on deep, truthful stories about reality, are being sold off and scrapped for parts. Goodbye, National Geographic, Scientific American, Spektrum de Wissenschaft, Research Professional News, and more...

Elise Cutts

“At National Geographic, dozens of people have received layoff notices“ … The grim reaper really is out for science journalism right now, isn’t he 💀 Sci am was sold + had layoffs, research professional news is shutting down, and now this?

2026’s Perseids, lousy this July, will peak at the perfect time The #Perseids have begun here on Earth, but conditions are lousy for it right now. On the night of the peak, however, conditions will be just about ideal. Here's how to best see them. bigthink.com/starts-with-... #space #astro

2026's Perseids, lousy this July, will peak at the perfect timeAlthough the Geminids have rivaled the Perseids recently, in 2026, the Perseids should win at their peak. Here's why, plus how to see them.bigthink.com

A cosmic first: separated sibling stars reunited by supernovae We've never witnessed a pair of massive, binary stars both go supernova before. Opposite the galactic center, we just might have spotted the ultimate family reunion: in death. bigthink.com/starts-with-... #space #astro #supernova

A cosmic first: separated sibling stars reunited by supernovaeWe've never witnessed a system of binary stars both go supernova before. A once-hidden source of gamma rays just revealed the first one.bigthink.com

Sugar in space: another step towards life’s origins With the discovery of our first sugar, the four-carbon molecule erythrulose, in an interstellar gas cloud, the raw ingredients for life are more abundant than ever. One big step to go! bigthink.com/starts-with-... #space #chemistry #astro

Sugar in space: another step towards life's originsIn a gas cloud 26,000 light-years away, a 4-carbon sugar, erythrulose, has just been found. Here's what it means for life in the Milky Way.bigthink.com

Ask Ethan: Does Mars’s gravity prohibit human colonization? Human bodies decay in the microgravity environment of interplanetary space, but recover on planet Earth. The low gravity of Mars will be a challenge, but maybe not a dealbreaker. bigthink.com/starts-with-... #mars #humans #astro #space

Ask Ethan: Does Mars's gravity prohibit human colonization?Mars is very different than Earth: smaller, drier, colder, etc. But the biggest long-term challenge, for human colonies, is its low gravity.bigthink.com
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