Performing two original songs, stand-up comedian, writer and musician Marcia Belsky shares comical commentary on some peculiar aspects of our culture -- from Instagram-stalking your crush to fending off mansplainers on social media --...

Hank pays tribute to some of the great scientific minds we lost in 2012, and then apologizes for some mistakes made in recent SciShow episodes.

On June 18, 1983, NASA astronaut Sally Ride became America's first woman in space after she and four colleagues blasted off on the space shuttle Challenger for the STS-7 mission. The astronauts spent 6 days in space deployed two...

“What Is a Physicist?” introduces Albert Einstein, Sir Isaac Newton, and the study of physics.

Learn about the physicist and astronaut, Sally Ride, who became the first American woman to fly in space.

Dr. Forrester examines the history of the Challenger mission to space by diagramming a timeline of the historical events. She compares and contrasts the positive and negative travels to space by making sense of the reasons for traveling...

Kay Taylor describes an experiment on board the space station that allows middle school students to remotely photograph the Earth. HWHAP Episode 218.

A conversation with Elissa Quintana, NASA research scientist for the Kepler and K2 mission at NASA’s Ames Research Center in Silicon Valley.

Every American who lived through the '80s remembers the Challenger explosion. But what happened to cause the famous national tragedy? How could such a catastrophe happen when NASA so meticulously checks and double checks all the...

In 1993, Ellen Ochoa wrote her name in the stars – as the first Hispanic woman to enter orbit. She continues to inspire generations of aspiring astronauts today.

LEGO Idea's bought out this amazing 'Women of NASA' set, and I thought it would be fun to build, play and learn from these inspiring women! First up, let's discover a little more about Sally Ride and Mae Jemison, two AWESOME ASTRONAUTS!

2012 Celebrity Memorial on December 10, 2012 in Los Angeles, California (Footage by WireImage Video/Getty Images)

CLEAN: 2012 Celebrity Memorial on December 10, 2012 in Los Angeles, California (Footage by WireImage Video/Getty Images)

This Week In History 6/14 - 6/20

Astronaut Sally Ride practices parachute simulator training.

Writer Maya Angelou and the first woman to fly in space, Sally Ride, are the first to appear on the coins.

Astronaut Sally Ride trains to fly into space.

President Barack Obama bestowed the Presidential Medal of Freedom on more than a dozen prominent Americans on Wednesday, 50 years after the death of its founder, President John F. Kennedy.

Obama honored former President Bill...

HEADLINE Raw Video: First video from moon's far side

CAPTION: A spacecraft orbiting the moon has captured the first video of the lunar far side that people on Earth can't see. The video was captured by one of NASA's...

President Barack Obama is bestowing the Presidential Medal of Freedom on more than a dozen prominent Americans 50 years after the death of the award's founder, President John F. Kennedy.

Obama...

SPACE (Shuttle Challenger's Maiden Voyage)

Space Shuttle Challenger on Maiden V
oyage
Space Shuttle Challenger o
n take-off
Satellite launch
from Challenger
Open
hatch of...

United States President Barack Obama is bestowing the Presidential Medal of Freedom on more than a dozen prominent Americans 50 years after the death of the award's founder, President John F....

1. NASA animation of Ebb and Flow, or the Gravity Recovery and Interior Laboratory (GRAIL), travelling above the surface of the moon

2. NASA animation of GRAIL orbiting the moon on its final orbit before...