Albert Einstein used to ponder these 5 mind-melting questions for fun. Can you figure them out?
Einstein's thought experiments help conceptualize complex scientific ideas for people without academic backgrounds using real-life scenarios and data.
Ali Sundermier
The camera you use can affect how wide your face looks in pictures
The camera can add 10 pounds!
Here's why we get those annoying electric shocks — and how we can prevent them
There are tons of reasons to hate winter. It's cold, dark, and for some reason, every time you trek through the cold to touch a doorknob, you get a shock.
The strongest evidence of the big bang was almost mistaken for pigeon droppings
In 1963, a pair of pigeons living inside a radio antenna almost led scientists off the trail of a discovery that confirmed the big bang.
20 physicists who revolutionized our understanding of the world
Every now and then a physicist comes along who forever changes our perception of the universe and everything in it.
Even your avocados are radioactive
No matter where you live on Earth, you most likely interact with radioactive materials every day. And they’re not as deadly as you might think.
Even your avocados are radioactive
No matter where you live on Earth, you most likely interact with radioactive materials every day. And they’re not as deadly as you might think.
Massive dust storms could threaten plans to colonize Mars and save humanity — but scientists are getting closer to predicting them
Martian dust storms would block solar energy, bug out electronics, and possibly cause health issues among explorers.
Here are the last photos a star-crossed robot took before killing itself on a comet
On September 30, the European Space Agency reunited two star-crossed spacecrafts when the Rosetta space probe crashed into Comet 67P.
Elon Musk says he won't be the first person on Mars because he doesn't want to die
One qualification might set you apart from your average Joe looking to vacation on the red planet — being prepared to die.
To join SpaceX's first mission to Mars, you have to be 'prepared to die'
One qualification might set you apart from your average Joe looking to vacation on the red planet — being prepared to die.
This is Elon Musk's plan to begin colonizing Mars by 2022
SpaceX founder Elon Musk shared his ambitious plan to colonize Mars at the 2016 International Astronautical Congress. Here's what he said.
We're about to deliberately crash a $1.5 billion spacecraft into a comet
On September 30, the European Space Agency will reunite two star-crossed spacecrafts as it crashes its Rosetta space probe into Comet 67P.
99.9999999% of your body is empty space
Your friends, your office, your really big car, you yourself, and everything in this incredible, vast universe are almost entirely empty space.
99.9999999% of your body is empty space
Your friends, your office, your really big car, you yourself, and everything in this incredible, vast universe are almost entirely empty space.
The sun will destroy Earth a lot sooner than you might think
Even if Earth spends the rest of its eons escaping aliens, dodging space rocks, and avoiding nuclear apocalypse, the day when our own sun destroys us will come.
Take a look inside this colossal machine where scientists propel electrons to 99.99% the speed of light
What exactly happens inside a particle accelerator?
There won't be anything like Friday's eclipse for another 8 years — here's how to watch
On Friday, Earth's shadow will pass over September's full moon, causing it to dim in the night sky. It will be the last harvest moon eclipse until 2024.
Take a look inside this colossal machine where scientists propel electrons to 99.99% the speed of light
What exactly happens inside a particle accelerator?
Scientists found 63 ancient cosmic objects that could shine a light on 'one of the greatest mysteries in astronomy'
Quasars are some of the brightest objects in the universe, shining with the light of as many as a hundred Milky Ways, or hundreds of trillions of suns.