Earth And Space Science

What Happens When Meteors Hit Earth?

It turns out, meteors hit Earth all the time, and it’s usually no big deal.

Vocabulary: Meteor, seismograph, meteor fall, Richter scale

What Would You Do If You Discovered A Volcano?

While on a flight across the Pacific Ocean, a woman spotted a giant floating…

How do earthquake early warning systems work?

Amy Nordrum describes the array of seismic sensors that alerted Mexico before a 7.1 magnitude earthquake hit.

Are levees along the Mississippi River part of the problem or the solution?

Eli Chen of St. Louis…

What message would you want ET to find?

Science Friday looks at the Golden Record, an interstellar greeting and time capsule. Intended for any intelligent extraterrestrial life form—or future human—who…

Why look at the solar eclipse via balloon?

Angela Des Jardins, leader of the NASA Eclipse Ballooning Project, talks about…

What research is going on during the Great American Eclipse?

What does sand look like under a microscope?

Gary Greenberg uses 3D microscopes to inspect the diversity of sand grains.

Vocabulary: sediments, microscopy, sand, crystals, biological sand

What can we learn when two black holes tango?

Theoretical astrophysicist Priyamvada Natarajan discusses LIGO’s third gravitational wave detection.