Please click here for information about the calendars.

October 19, 2020 - Chandra Celebration

Chandra Celebration  Originally called the Advanced X-ray Astrophysics Facility, NASA’s third “Great Observatory” was renamed to honor Indian Nobel laureate Subrahman­yan Chandra­sekhar prior to its 1999 launch. Known to the world as Chandra (which means “moon” or “luminous” in Sanskrit), he was born 110 years ago this week and was widely regarded as one of the foremost astrophysicists of the twentieth century. Chandrasekhar made fundamental contributions to the study of stellar evolution, black holes, and other high-energy phenomena that the Chandra X-ray observatory was designed to explore. In this Chandra-Hubble composite image, X-ray data (in blue) shows that the central star of the Cat’s Eye planetary nebula is surrounded by a delicately structured cloud of multimillion-degree gas.

Image credit: X-ray: NASA / CXC / SAO; Optical: NASA / STScI

Weekly Calendar

October 19 - 25, 2020

Holidays - Sky Events - Space History


Moon phase Monday 19

1910: Subrahmanyan Chandrasekhar born
1967: Mariner 5 flies past Venus
2005: Final Titan IV rocket launched
2016: ExoMars arrives at Mars
2016: Soyuz MS-02 launched carrying ISS Expedition 49/50 crew
2018: BepiColombo spacecraft launched

Moon phase Tuesday 20

1970: Zond 8 launched
1995: STS-73 Columbia launched

Moon phase Wednesday 21

Orionid meteor shower

1923: First public planetarium show, Deutsches Museum in Munich
: Hubble Heritage Project website launched
2008: Chandrayaan-1 lunar probe launched

Moon phase Thursday 22

Ceres stationary
Orionid meteor shower
Jupiter 2° north of Moon

2136 BCE: First record of solar eclipse
1905: Karl Jansky born
1966: Luna 12 launched
1975: Venera 9 orbits Venus
1992: STS-52 Columbia launched

Moon phase Friday 23

Saturn 3° north of Moon
First Qtr Moon 9:23 AM ET

1968: First powered flight of the HL-10 lifting body
2007: STS-120 Discovery launched
2012: Soyuz TMA-06M launched carrying ISS Expedition 33/34 crew

Moon phase Saturday 24

1851: William Lassell discovers Uranus moons Umbriel & Ariel
1946: First photo of Earth taken from space
: 199th and final X-15 flight
1998: Deep Space 1 launched
2001: Mars Odyssey arrives at Mars
2007: Chang'e-1 lunar spacecraft launched

Moon phase Sunday 25

Mercury in inferior conjunction

1671: Giovanni Cassini discovers Iapetus, moon of Saturn
1877: Henry Norris Russell born
1975: Venera 10 lands on Venus
2006: STEREO spacecraft launched

Suggestions for new history dates or better links? Corrections for errors on this page? Please e-mail me.