Many people believe in aliens, but what does the science say about life on another planet? Part of a larger series, an interesting video discusses the concept with people on the street and scientists, finding vastly different answers. It...

Carbon makes all life on Earth possible, not to mention most technology and progress. The 12th video in a 16-part series explains the significance of being made of star stuff. From the formation of chemical elements to the rise in...

According to Carl Sagan, we are all made of star particles. The second video in a series of 16 explains what happened after the big bang. It discusses cosmic background radiation, chemistry, galaxies, heavy elements, and the creation of...

Theoretical physicists say that space and time are one thing created by the Big Bang. According to them, nothing happened in the time before the Big Bang because time did not exist. The first Crash Course-Big History video in a 16-part...

British astronomer Sir Fred Hoyle first coined the term the Big Bang in 1950. The theory explains much of what we have observed in the universe, but it does leave some things unexplained. The video discusses the Cosmic Inflation...

Starting with a seemingly simple question, a video covers how many stars are visible with the human eye. Then it explains how many stars are in the Andromeda galaxy next to ours. The most interesting part is when you view a single square...

Why is the spin of a black hole important? Scholars explore spinning black holes and how they relate to momentum, matter, and mass. They investigate the different parameters that are used to measure black holes by understanding how...

Could the universe be part of one giant video game? A video lesson considers the idea that a powerful enough computer could simulate the universe. Building on an understanding of the mathematical laws of the universe, the lesson...

How far back in time can scientists see? Currently, the earliest photo of the universe is the cosmic microwave background, but math models prove the universe existed long before that time. An installment from the SciShow Space series...

It's difficult to believe in what you cannot see. A video presentation outlines evidence to convince scholars of the idea that there is no end to the universe. A video takes viewers on a trip through history to show learners how our...

Oops, something bumped into us! Scientists research what bumped into our galaxy, when, and where it went after the collision. Part of a larger SciShow Space series, an interesting video presents three mysteries, including the collision....

Stars come from families, but scientists aren't sure where to find the sun's relatives. Learn more about identifying star families and the confusion about the sun. As part of a larger SciShow Space series, an interesting video offers a...

Time capsules offer a glimpse into the past, and red nugget galaxies are the time capsules of the universe. Using an installment from the SciShow Space series, viewers explore the discovery of new red nugget galaxies. The video also...

Evidence suggests that Pluto has undergone polar wander. A video instructor explains how Pluto's axis of rotation may have changed and how this is possible. The lesson focuses on the science behind the discovery and what it tells...