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Stellar streams are faint trails of stars that appear to "stream" out of galaxies. A new one, escaping galaxy M61, may point to many others.
Dark matter has never been directly detected, but the astronomical evidence for its existence is overwhelming. Here's what to know.
Questions about our origins, biologically, chemically, and cosmically, are the most profound ones we can ask. Here are today's best answers.
Across all wavelengths of light, the Sun is brighter than the Moon. Until we went to the highest energies and saw a gamma-ray surprise.
It's OK to hate a frigid pond.
Throughout history, "free energy" has been a scammer's game, such as perpetual motion. But with zero-point energy, is it actually possible?
"For many people, the idea that consciousness is a set of tricks is offensive," the late philosopher told Big Think in 2012. "I think that's a prime mistake."
When your head is full of information, how can you actually make use of it?
Amplifying the energy within a laser, over and over, won't get you an infinite amount of energy. There's a fundamental limit due to physics.
Wonder is like a guest you haven’t planned for.
From Einstein to Twain, Garson O’Toole investigates the truth behind your favorite — and often misattributed — quotes.
For over 50 years, it’s been the scientifically accepted theory describing the origin of the Universe. It’s time we all learned its truths.
In this excerpt from "Agents of Change," Christina Hillsberg tells the story of Martha “Marti” Peterson, the first female case officer stationed in Soviet Moscow.
For his new book, “The Ghost Lab,” Matt Hongoltz-Hetling spent time with paranormal investigators to understand their relationship with science and society.