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Aldrin was became the second human to walk on the Moon on July 20, 1969.

Cool Finds

Astronauts Fill Out Customs Forms, Too

Read Buzz Aldrin's expense report and customs form from his Apollo 11 mission to the moon

Giovanni Stanchi (Rome c. 1645-1672). Oil on canvas, 38 5/8 x 52½ in.

Cool Finds

This Renaissance Painting of Fruit Holds a Modern-Day Science Lesson

Hint: it's in the watermelon

New Research

Feeling Small in the Face of Nature Makes People More Generous

Awe, yeah

Satellite images of the Moon moving around the Earth

Cool Finds

Breathtaking Space GIF Gives Earth a New Perspective of the Moon

NASA's EPIC camera took the image a million miles from Earth

Black chicken served with bamboo shoots and caterpillar fungus

Cool Finds

Why This Chicken is Black From Comb to Feathers to Muscles

The Ayam Cemani is the Goth of the chicken world

Trending Today

The Physics of a UFC Fighter so Fast, She Might Just Be Bionic

Two words: kinetic energy

New Research

By Keeping Cows From Burping, This Drug Could Slow Down Climate Change

That cheeseburger may soon be less harmful to the environment

Trending Today

Balloon or Drone? The Internet's Space Race is Heating Up

Facebook and Google battle to provide the best internet connection from the edge of the atmosphere

A resident walks along the border of an Indian enclave within Bangladesh

Trending Today

This Was the Turducken of Border Disputes

Dahala Khagrabari (#51) used to be a piece of India inside Bangladesh, inside India, inside Bangladesh

New Research

Teen Schools Professor on "No Irish Need Apply" Signs

Armed with a Google search and a theory, a 14-year-old enters the fray on a longstanding historical debate

Iceberg Lake and melting glacier in Glacier National Park

New Research

Glaciers Are Retreating Faster Than Before

The future of Earth's glaciers is unsettling at best

Red Rocks Park, Jefferson County, Colorado.

Trending Today

The Parks Service Just Added Four New National Historic Landmarks

Masonic memorials, bison jumps and parks

Trending Today

The Middle East Just Lived Through One of the Hottest Days in History

An Iranian city logged a 165-degree heat index last week as temperatures continue to boil

Cool Finds

Astronauts Have Some Weird Pre-Launch Traditions

Rituals are important when you're about to rocket into space

A vintage Antonov An-2 in Poland.

Trending Today

North Korea's Military Still Uses Stealth Planes From the 1940s

The An-2 can hover and fly backwards

Cool Finds

How Emojis Could Help People With Food Allergies

Bread emoji. Disappointed face emoji.

Roofs became pleas for help for people and their pets following Hurricane Katrina

Trending Today

How Hurricane Katrina Changed Pets' Legal Status

The loss of thousands of pets to the hurricane encouraged lawmakers to rethink society’s responsibility to animals

Cool Finds

A 13th-Century Sword Is Giving Historians a Headache

The sword's inscription is an 800-year-old mystery

Artist’s view of a black hole — the normal sized kind, mini black holes would be cuter.

New Research

Why Super-Small Black Holes Haven’t Destroyed the Universe

And probably won't

Cool Finds

Scientists Have Been Talking About Greenhouse Gases for 191 Years

The first explorations of the greenhouse effect began in 1824

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