Science Dictionary

Do you know what a meteor is, or what scientists mean when they are talking about cryogenics? Our collection of science terms explains the meaning of some of the most common scientific ideas.


When life gives you water and pH and color data ... make lemonade?

The renowned scientist said in an interview with "Good Morning Britain" that he accepted Richard Branson's invite to fly into space without a moment's hesitation.

A new experiment supports the famous theoretical physicist's idea of radiation being emitted by black holes.

Moore's longstanding law might have only a few years left as far as cramming more stuff into a square inch of silicon. But what if you cram upward?

Global air pollution and weaponized artificial intelligence round out the trifecta of threats, the astrophysicist tells interviewer Larry King.

The celebrity astrophysicist takes a break from his current tour to discuss science and education with the hosts of the 'Stuff You Should Know' podcast.

All aspiring scientists, or just those who love knowledge, should know these quotes from greats like Carl Sagan, Marie Curie and Buzz Aldrin, among others.

Scientists are still trying to figure out the essence of dark matter. If they do, will it lead only to greater understanding, or can we develop new technologies?

These super common, nearly massless subatomic particles shoot across space at near the speed of light. And they could help us to understand dark matter.

Something else you didn't know about the Pluto exploration: Queen guitarist Brian May has serious science chops, and he contributed to the New Horizons mission.

Everyone knows that nothing travels faster than the speed of light, but how does the speed of dark compare? Read on to find out!

The man who had some theories about relativity was also an eccentric who gleefully eschewed socks, dodged German military service and spurned social conventions.

He built President Eisenhower an indoor golf-training machine, analyzed the Zapruder film and searched for an Egyptian pyramid's treasure chamber using cosmic rays. Aren't you dying to meet this wide-ranging scientist?

If you have a theory that potato chips are making you fat (with the proof being your expanding waistline), you've just used two scientific terms in a very unscientific way.

He is famous for a phrase he never said, for wearing turtlenecks and for hosting the original 'Cosmos' TV series. As enthusiastic about the stars as he was about marijuana, Carl Sagan led a very surprising life. Here are 10 cool facts.

He starred with Superman, drove the getaway car at Pluto's demise and was voted sexiest astrophysicist by People magazine. Is there anything Neil deGrasse Tyson can't do?

Is this famous primatologist atheist, agnostic or theistic? Find out as we bravely explore whether science and religion must always collide.

He may have been born in Brooklyn, but Carl Sagan was gunning for the stars as soon as he arrived in this world. Get to know the scientist whose infectious delight in the universe still holds us spellbound.

He's ventured to the abyss of black holes, wagered on the information paradox and floated around in zero gravity. Meet the man, the legend, the super scientist: Stephen Hawking.

How cool would that be to stand amongst the company of fellow laureates like Mother Teresa or Albert Einstein? We have some ideas for scoring you one (nominating yourself isn't one of them).

Frequency has to do with wave speed and wavelength is a measurement of a wave's span. Learn how frequency and wavelength of light are related in this article.

He was born exactly 300 years after Galileo died. He has yet to be awarded a Nobel Prize, although he was awarded a guest spot on “The Simpsons.” What else do you know (or not know) about this acclaimed physicist?

You've heard of the big bang, of course, but do you have any idea as to what was happening during that massive flurry of activity billions of years ago?

So much of our cosmological history starts with the much-discussed big bang, but what led up to that cataclysmic moment? And did time even exist back then?

Every day, astronomers unravel a little more of the universe's inner workings, but the jury is still out on 95 percent of its contents.