Jean-Loup Chrétien

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Jean-Loup Chrétien.

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solar eclipse, sun, moon, astronomy, space

How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses?

Arrangement of the phases of the moon in total eclipse with Blood Moon

9 Celestial Omens

Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)

How Fast Is the Universe Expanding?

October 18, 2019. NASA astronaut Jessica Meir waves at the camera during a spacewalk with fellow NASA astronaut Christina Koch (out of frame). They ventured into the vacuum of space for seven hours and 17 minutes to swap a failed battery charge-discharge unit (BCDU) with a spare during the first all-woman spacewalk. The BCDU regulates the charge to the batteries that collect and distribute solar power to the orbiting lab's systems.

7 Questions for Astronaut Jessica Meir

US Skylab space station in orbit. After the Apollo missions, the next major NASA venture was the Skylab manned earth satellite program. The orbiting laboratory was launched on May 14, 1973, and during the year three separate crewsof three men were sent up

Pro and Con: Space Colonization

Discover

World Data Locator Map: Australia

Is Australia an Island?

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden

7 Winter Solstice Celebrations From Around the World

Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009

Which Is Correct: Hanukkah or Chanukah?

Entrants falling and tumbling over while chasing the cheese at the 2016 'Cheese Rolling' held at Cooper's Hill, in the Cotswolds, Brockworth England

7 of the World’s Most Dangerous Festivals

Panama Canal infographic

Timeline and Map of the Panama Canal

Jean-Loup Chrétien: References & Edit History

More Articles On This Topic

Assorted References

association with Volkov
- In Aleksandr Volkov

Article Contributors

Primary Contributors

John M. Logsdon

Other Encyclopedia Britannica Contributors

Article History

Type	Description	Contributor	Date
	First paragraph modernization.	Encyclopaedia Britannica	Apr 26, 2024
	Anniversary information added.		Aug 16, 2023
	Modified link of Web site: NASA - Biography of Jean-Loup J.M. Chrtien.	Emily Rodriguez	Jul 19, 2018
	Add new Web site: NASA - Biography of Jean-Loup J.M. Chrtien.	Parul Jain	Jul 22, 2011
	New article added.	Erik Gregersen	Sep 07, 2007