Starts With A Bang — April 30, 2017

New Podcast: Is Time Travel Possible?

Travel the universe with Dr. Ethan Siegel as he answers the biggest questions of all

Is time travel possible? Of course it’s inevitable in some sense, as we always move through the Universe at the “boring” rate of one second per second. But what about traveling into the future? If we go, can we ever come back? And what about back in time? Would it be possible to alter the past, or revisit a historical event as an observer?

The mathematics of relativity opens the door to a lot of possibilities, but the physical Universe has a lot to say about it, too. Find out on the latest edition of the Starts With A Bang podcast!

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Travel the universe with Dr. Ethan Siegel as he answers the biggest questions of all

An abstract composite image depicting where life began with mountainous terrain, chemical structures, and a monochrome inset of a cloudy sky.

Starts With A Bang

What was it like when life first sprang forth on Earth?

Although early Earth was a molten hellscape, once it cooled, life arose almost immediately. That original chain of life remains unbroken.

A computer-generated image of a bright celestial object with an accretion disk, possibly representing what the sun looked like when it was born.

Starts With A Bang

What was it like when the Sun was born?

It took 9.2 billion years of cosmic evolution before our Sun and Solar System even began to form. Such a small event has led to so much.

Composition of the dark energy prominence universe showing percentages of dark energy, dark matter, and visible matter.

Starts With A Bang

What was it like when dark energy rose to prominence?

Early on, only matter and radiation were important for the expanding Universe. After a few billion years, dark energy changed everything.

Starts With A Bang

Ask Ethan: Why doesn’t radiation dominate the Universe?

For every proton, there were over a billion others that annihilated away with an antimatter counterpart. So where did all that energy go?

A gold cylinder with a yellow handle crafted for quantum computing.

Starts With A Bang

Starts With A Bang podcast #101 – Quantum Computing

Here in the 21st century, quantum computing is quickly going from a dream to a reality. But what’s hype, and what’s actually true?

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