Rare

Chandra X-ray Observatory

NASA space telescope launched in 1999

The Chandra X-ray Observatory (CXO), previously known as the Advanced X-ray Astrophysics Facility (AXAF), is a Flagship-class space telescope launched aboard the Space Shuttle Columbia during STS-93 by NASA on July 23, 1999. Chandra is sensitive to X-ray sources 100 times fainter than any previous X-ray telescope, enabled by the high angu…

Attack
6,660
Defense
7,420
readers / month
5,182
Article length
44 kB · 55 languages

Text from Wikipedia, CC BY-SA 4.0 · Authors

Chandra X-ray Observatory is a Rare card because its Wikipedia article was read 5,182 times in the last 30 days. Its 44 KB of text give it 6,660 attack, and coverage in 55 Wikipedia language editions gives it 7,420 defense.