Ethan Siegel is a Ph.D. astrophysicist and author of "Starts with a Bang!" He is a science communicator, who professes physics and astronomy at various colleges. He has won numerous awards for science writing since 2008 for his blog, including the award for best science blog by the Institute of Physics. His two books "Treknology: The Science of Star Trek from Tricorders to Warp Drive" and "Beyond the Galaxy: How humanity looked beyond our Milky Way and discovered the entire Universe" are available for purchase at Amazon. Follow him on Twitter @startswithabang.
From black holes to dark energy to chances for life in the Universe, our cosmic journey to understand it all is just getting started.
Is science absolute? Its truths and discoveries guide us toward the nature of reality, but we must always remain open-minded to revisions.
Einstein's "happiest thought" led to General Relativity's formulation. Would a different profound insight have led us forever astray?
As we look to larger cosmic scales, we get a broader view of the expansive cosmic forest, eventually revealing the grandest views of all.
Our model of the Universe, dominated by dark matter and dark energy, explains almost everything we see. Almost. Here's what remains.
Magnetic monopoles began as a mere theoretical curiosity. They might hold the key to understanding so much more.
The anthropic principle has fascinating scientific uses, where the simple fact of our existence holds deep physical lessons. Don't abuse it!
Known as orphaned planets, rogue planets, or planets without parent stars, these "outliers" might be the most common planet of all.
There's an extra source of massive "stuff" in our Universe beyond what gravitation and normal matter can explain. Could light be the answer?
Unless you have a critical mass of heavy elements when your star first forms, planets, including rocky ones, are practically impossible.
The whole isn't greater than the sum of its parts; that's a flaw in our thinking. Non-reductionism requires magic, not merely science.
Dark matter has never been directly detected, but the astronomical evidence for its existence is overwhelming. Here's what to know.
With a telescope at just the right distance from the Sun, we could use its gravity to enhance and magnify a potentially inhabited planet.
We only detected our very first gravitational wave in 2015. Over the next two decades, we'll have thousands more.
We knew we'd find galaxies unlike any seen before in its first deep-field image. But the other images hold secrets even more profound.
There are so many problems, all across planet Earth, that harm and threaten humanity. Why invest in researching the Universe?
Searching for dark matter, the XENON collaboration found absolutely nothing out of the ordinary. Here's why that's an extraordinary feat.
Even at its faintest, Venus always outshines every other star and planet that's visible from Earth, and then some!
Take a peek at the pre-release images used to calibrate and commission JWST's coldest instrument, now ready for full science operations.