SciShow
Planet 9 from Outer Space
Could we have a possible 9th Planet? Hank Green tells us what we think we know with this elusive object.
SciShow
Mars Colony Plans
Hank is all about Mars, and Elon Musk, the founder of SpaceX, has some plans for colonizing the Red Planet that have got Hank very excited.
SciShow
4 Important Lessons from the Apollo 11 Moon Landing
SciShow Space celebrates the 45th anniversary of the first moon landing by highlighting just four of the most important things we learned from the Apollo 11 mission.
SciShow
Why Getting Sick in Space Is the Worst
We've talked about some of the ways microgravity can negatively affect humans, but for bacteria, being in space might be quite beneficial!
TED-Ed
TED-Ed: Reasons for the seasons - Rebecca Kaplan
Why do some regions experience full-time heat while others are reckoning with frigid temperatures and snow? And why are the seasons reversed in the two hemispheres? Rebecca Kaplan explains how the shape of the Earth's orbit around the...
SciShow
Why Our Solar System Is Weirder Than You'd Think
Research suggests that nearly every star has at least one planet, but we haven't found any other solar systems that look quite like ours.
Crash Course
Saturn
Saturn is the crown jewel of the solar system, beautiful and fascinating. It is a gas giant, and has a broad set of rings made of ice particles. Moons create gaps in the rings via their gravity. Saturn has dozens of moons, including...
SciShow
What's It Like at the Edge of the Solar System
Where does our solar system end, and interstellar space begin, and what is it like there? Satellites and probes like IBEX and Voyager 1 & 2 help us get a better look at our special corner of the galaxy.
SciShow
A History of Earth's Climate
Earth had a climate long before we showed up and started noticing it and it's influenced by a whole series of cycles that have been churning along for hundreds of millions of years. In most cases those cycles will continue long after...
SciShow
That Time We Gave Earth a Ring Made of Millions of Tiny Needles
In the 1960s, the USA almost put a ring around the Earth by launching hundreds of millions of tiny copper needles into space in an attempt to create a reliable boost for their communications systems.
Crash Course Kids
Everything Revolves Around You
So, why doesn't the moon just crash into the Earth? And why doesn't the Earth crash into the Sun? What are orbits exactly and why do they happen? Well, it has to do with gravity and velocity. In this episode of Crash Course Kids, Sabrina...
Crash Course
The Gravity of the Situation
In today's episode, Phil looks at how gravity plays out across the universe.
Crash Course Kids
Orbits are Odd
Last week we talked about the orbits of the Earth and our Moon. But today we're going to go a little bigger... well, a lot better. Did you know that there is a massive Black Hole at the center of our Galaxy? Or that Pluto's orbit is...
Bozeman Science
ESS1B - Earth and the Solar System
In this video Paul Andersen explains the parts of the Solar System; including the planets, dwarf planets, moons and asteroids. He explains how everything orbits around the Sun and how a proper understanding of this heliocentric model...
Crash Course
Moon Phases
In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases.
SciShow Kids
What Do Astronauts Do?
You may have dreamed of being an astronaut, or maybe that's what you want to be when you grow up! But how do astronauts become astronauts, and what do they do when they're in space? Join Jessi and Squeaks to learn what it takes to be an...
SciShow Kids
Why Can I See the Moon During the Day?
Have you ever noticed the moon hanging out in the daytime sky and wondered why? Join Jessi and Squeaks to find out!
SciShow
The Stardust Mission: Collecting Comet Dust in Space
Around 20 years ago NASA launched a spacecraft to study the comet Wild-2. What it brought back would cause scientists to wonder whether the building blocks of life could have arrived at Earth on a comet.
SciShow Kids
Comets and Asteroids!
Our journey through the solar system continues, as Jessi gives you a close look at comets and asteroids!
SciShow Kids
Explore the Solar System: The Rocky Planets
Explore the four inner rocky planets, as Jessi and Squeaks take you on a tour of the solar system!
SciShow Kids
Explore the Solar System: The Gas Giants
Explore the four gas giant planets, as Jessi and Squeaks take you on a tour of our solar system!
Crash Course
Comets
Today on Crash Course Astronomy, Phil explains comets. Comets are chunks of ice and rock that orbit the Sun. When they get near the Sun the ice turns into gas, forming the long tail, and also releases dust that forms a different tail....
Crash Course
Mars
The fourth planet from the sun and the outermost of the terrestrial planets, Mars has long been a popular spot for missions and imagination. Phil walks you through the planet's topography, core, and features. We'll take a look back to...