Posts by 

Elizabeth Howell

Voyager 2 launched 45 years ago

Voyager 2 realized the vision of what was originally called a Grand Tour of the outer solar system. It is the only craft that has visited all 4 outer planets.

Baily’s beads seen during a solar eclipse

May 15, 1836: Francis Baily, an English astronomer, saw light shining through lunar ridges during an eclipse of the sun. These are now known as Baily's beads.

This date in science: America and Russia meet in space

On July 17, 1975, a famous first handshake between nations in space.

This date in science: Paris Metro begins operations

First subway system in France and second-busiest in Europe today. But its early days were not without controversy.

Today science: Mount Everest without supplemental oxygen

Here's why climbers use supplemental oxygen to climb Mount Everest. Also, the curtailment of the 2014 Everest climbing season following a deadly avalanche.

Largest volcanic eruption in recorded history

On April 10, 1815, Mount Tambora sent so much crud into the atmosphere that it blocked the sun. What became known as the Year Without a Summer came a year later, in 1816.

This date in science: A record-setting dive into the deepest ocean

On January, 23, 1960, the bathyscaphe Trieste made a record-setting dive to the deepest known part of the ocean.

This date in science: Carl Ritter, one of first modern geographers, born

On August 7, 1779, Carl Ritter, considered one of the first modern geographers, was born.

This date in science: First U.S. patent issued

The first U.S. patent was for a new method of making potash, an early industrial chemical, used to make soap and other products.

This date in science: Happy birthday, Harrison Schmitt

Born July 3, 1935, Harrison "Jack" Schmitt is the only trained scientist to have walked on the moon, so far.