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Elizabeth Howell

Today in science: Great Meteor Procession

The February 9, 1913 meteors crossed the sky in formation, on nearly identical paths. Their pace across the sky was described as “stately” and “measured.”

Today in science: Isaac Newton’s birthday

Isaac Newton was born on January 4, 1643. His insights laid a foundation for our modern understanding of celestial motion, light and gravity.

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: Definitive discovery of Neptune’s rings

A few days before the NASA spacecraft Voyager 2 skimmed by Neptune in 1989, it acquired images of a faint, continuous ring system encircling the planet.

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.

This date in science: First woman in space

Under the call name “Chaika” (Seagull), Tereshkova launched solo aboard Vostok 6 in June, 1963, to become the first woman in space.

This date in science: Mount Everest without supplemental oxygen

A look at why climbers use supplemental oxygen to climb Mount Everest and at the curtailment of the 2014 Everest climbing season following the deadly avalanche on April 18.

This date in science: Pluto gets a name

On May 1, 1930, 11-year-old Venetia Burney received £5 for naming Pluto, then the solar system’s outermost and newest planet.

This date in science: 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.