CIVA meaning in General ?

Answer: What is Comet Infrared and Visible Analyser mean?

Philae ( or ) is a robotic European Space Agency lander that accompanied the Rosetta spacecraft until it separated to land on comet 67P/Churyumov–Gerasimenko, ten years and eight months after departing Earth. On 12 November 2014, Philae touched down on the comet, but it bounced when its anchoring harpoons failed to deploy and a thruster designed to hold the probe to the surface did not fire. After bouncing off the surface twice, Philae achieved the first-ever "soft" (nondestructive) landing on a comet nucleus, although the lander's final, uncontrolled touchdown left it in a non-optimal location and orientation.

Despite the landing problems, the probe's instruments obtained the first images from a comet's surface. Several of the instruments on Philae made the first direct analysis of a comet, sending back data that would be analysed to determine the composition of the surface. In October 2020, scientific journal Nature published an article which revealed what it was determined Philae had discovered while it was operational on the surface of 67P/Churyumov–Gerasimenko.

On 15 November 2014 Philae entered safe mode, or hibernation, after its batteries ran down due to reduced sunlight and an off-nominal spacecraft orientation at the crash site. Mission controllers hoped that additional sunlight on the solar panels might be sufficient to reboot the lander. Philae communicated sporadically with Rosetta from 13 June to 9 July 2015, but contact was then lost. The lander's location was identified to within a few tens of metres but it was not seen. Philae, though silent, was finally identified unambiguously, lying on its side in a deep crack in the shadow of a cliff, in photographs taken by Rosetta on 2 September 2016 as the orbiter was sent on orbits closer to the comet. Knowledge of its location would help in interpretation of the images it had sent. On 30 September 2016, the Rosetta spacecraft ended its mission by crashing in the comet's Ma'at region.

The lander is named after the Philae obelisk, which bears a bilingual inscription and was used along with the Rosetta Stone to decipher Egyptian hieroglyphs. Philae was monitored and operated from DLR's Lander Control Center in Cologne, Germany.

reference

Full Form	Category
Centre International pour la Ville, l'Architecture et le Paysage (French: International Center for Urbanism, Architecture and Landscape; Belgium)	Academic & Science
Charge-Induced Voltage Alteration	Academic & Science
Comet Nucleus Infrared and Visible Analyser (instrument aboard the Rosetta spacecraft)	Academic & Science
Conectiv, Inc. Class A	Business
Character Integrity Values Arts	Community
Christians In The Visual Arts	Community
Character Integrity Vision And Arts	Community
Conseil Interprofessionnel des Vins d'Alsace (French wine association)	Community
Character Integrity Vision and the Arts (Charter School, Colorado Springs, CO)	Community
Congreso Iberoamericano Virtual De Acuicultura	General
Commissie Informatica Van Artsen	General
Comet Infrared and Visible Analyser	General
Conseil Information pour la Vie Associative (French: Community Life Information Council)	International
Centralised Intravenous Additive	Medical
Carcinomas In Villous Adenomas	Medical
Canada India Village Aid (Vancouver, British Columbia, Canada)	Regional