The Arecibo Message Was Our First Attempt At Talking To Aliens

1 of 493

The Arecibo Message Was Our First Attempt At Talking To Aliens

How long have we been trying to talk to aliens? Well, really only since 1974, the year we sent the first message into interstellar space. This was the Arecibo Message.Related: Astronomers Might Have Heard 234 Signals From Aliens

A Prince Rupert's Drop Is Both Extremely Fragile And Virtually Unbreakable

2 of 493

A Prince Rupert's Drop Is Both Extremely Fragile And Virtually Unbreakable

Would you believe that there's an object that's both nearly unbreakable and so fragile it shatters instantly? Well, believe it. This paradoxical object is a piece of glass known as a Prince Rupert's drop.

Brains Begin To Slow Down At Age 24

3 of 493

Brains Begin To Slow Down At Age 24

When it comes to the cognitive decline of your brain, is 24 the new 50? A 2014 study shows that our cognitive-motor skills begin declining at much younger age than previously thought.Related: Just How Fast Is Your Brain?

99 Percent Of The Earth's Species Are Extinct—But That's Not The Worst Of It

4 of 493

99 Percent Of The Earth's Species Are Extinct—But That's Not The Worst Of It

If you were to list out every species that has ever existed on Earth—from the tiniest mold spore to the largest mammal—biologists estimate that somewhere around 99 percent of those species would currently be extinct.

A Bowling Ball And Feather Will Fall At The Same Rate In A Vacuum Chamber

5 of 493

A Bowling Ball And Feather Will Fall At The Same Rate In A Vacuum Chamber

Next time you find yourself in a vacuum (we're not holding our breath for it), don't waste the opportunity to try out a classic science experiment. If you simultaneously drop a bowling ball and a feather from the same height in a vacuum, they will hit the ground at the same time. The result is just as much due to gravity as it is due to air resistance.Related: Zero Gravity Doesn't Exist In Space