This week we’re replaying some of our favorite shows about planets and stars and galaxies and the people who have studied them.

2012 transit of Venus as seen by NASA's Solar Dynamics Observatory spacecraft (Photo by NASA/SDO, AIA via Wikicommons/Creative Commons https://en.wikipedia.org/wiki/Transit_of_Venus#/media/File:SDO's_Ultra-high_Definition_View_of_2012_Venus_Transit_(304_Angstrom_Full_Disc_02).jpg)

Guillaume Le Gentil, The 18th Century Astronomer With the Worst Luck

In 1769, Captain James Cook and his crew observed the transit of Venus from Tahiti, a big deal for astronomers. His French colleague Guillaume Le Gentil had spent years preparing to do the exact same thing, and had much worse luck on his expedition.


Portrait of Caroline Herschel, by Ölgemälde: Melchior Gommar Tieleman; Foto des gemeinfreien Gemäldes: unbekannt - Michael Hoskin: Discoverers of the Universe: William and Caroline Herschel, book preview: https://books.google.de/books?id=8MzDas3GeJMC&pg=PA142-IA14&dq=Melchior+gommar+Tielemann+1784+1864&hl=de&sa=X&ved=0ahUKEwiAnJTx9afZAhXQzaQKHXVjCb8Q6AEIODAC#v=onepage&q&f=false, Public Domain, https://commons.wikimedia.org/w/index.php?curid=66456850

Caroline Herschel Discovered Comets And Became A Star

Here’s the story of an astronomer who definitely made her mark on the sky: Caroline Herschel, the first woman to discover a comet.


Cincinnati Observatory, an old brick building with pillars in front and a large translucent-looking dome on top. (Photo by 5chw4r7z via Flickr/Creative Commons https://flic.kr/p/nuWadq)

Cincinnati Built An Observatory Any Stargazer Could Use

In 1843, Cincinnati dedicated an observatory that was open to the public, the first of its kind in the U.S., one called the “birthplace of American astronomy.”


A fireworks show in Nevada for Independence Day 2015. (Photo by Leticia Roncero via Flickr/Creative Commons https://flic.kr/p/uS2Mz5)

What Was July 4th Like Before The Fourth Of July?

Before Independence Day rewrote July 4th, one of the most prominent happenings associated with the day was an astronomical event in 11th Century China.


Two photos of stars in space. At left, a photo from a ground-based telescope in which the stars are pixellated. At right, a picture of the same stars taken from Hubble Space Telescope that are still blurry, but much clearer than the first image.

The Hubble Telescope’s First Space Photo Was Kind Of Blurry

The story of an important if not technically perfect image: the first picture ever taken from the Hubble Space Telescope.

Painting by Ferdinand Bol, London, National Gallery via Wikicommons