Planet+-VENUS

= **__Venus -2nd Planet from the Sun__** (Kaede) = = ü **Orbital period:**=
 * 224.700 69 days
 * (1.92 in Venus solar days)

= ü **Date of Discovery:**=
 * Since Venus was so bright and visible to human, there is no exact Discovery Date given.
 * Although, "Galileo in 1610 was first to observe that Venus had a visible disk and it had phases like the moon so perhaps he could be considered to have discovered in modern Venus."
 * Captain James Cook made observations of a "Transit of Venus" in 1776-1779.

= ü **Scientific History:**=
 * Unlike Mercury which has had only one spacecraft visitor, Venus has had close to twenty spacecrafts.
 * The first one was the Mariner 2 in 1962. Others include Pioneer Venus, Venera 7, Venera 9 and the Magellan. Quite a few of the unmanned space crafts that have visited Venus have resulted stranded in Earth's orbit.
 * These include: 1VA - 1, 2MV-1 - 2, 2MV-2 - 1, 3MV-1 - 5, V-67 - 2, V-70 -, 3V. * All the missions to Venus have either been from USA or Russia (USSR at that time)


 * __Space Craft Fact File__:
 * 1) Mariner 2
 * Launched: August 27, 1962
 * From: USA
 * Intention: Flyby
 * Result: 1st successful planetary mission found that Venus has small magnetic field.
 * 1) Magellan
 * Launched: May 4, 1989
 * From: USA
 * Intention: Orbit
 * Result: High resolution radar mapping
 * 1) Pioneer Venus
 * Launched: May 20, 1978
 * From: USA
 * Intention: Orbit
 * Result: Radar mapping, photo study of clouds (which operated for 14 years!!)


 * ClassZone Activity: []

= ü **Mythology:**=
 * Roman Mythology:
 * The goddes of love and beauty, equivalent to the Greek Aphrodite.
 * Venus was also worshipped as a goddess of military victory and patroness of spring.

= ü **Size:**=
 * Surface area: 4.60 x 10 8 km 2 / 0.949 9 Earths
 * Volume: 9.38 x 10 11 km 3 / 0.866 Earths
 * 4.868 5 x 10 24 kg / 0.815 Earths

= ü **Composition:**= = ü **Atmospheric conditions:**=
 * Have Surface pressure with 9.3 MPa (93 bar)
 * Thick and pale yellow clouds covering all over the surface of Venus.
 * The full of carbon dioxide makes Venus surface invisible.

= ü **Resources:**=
 * Carbon Dioxide gases
 * (Probably: liquid gas or natural oil)

= ü **Significant and noteworthy features:**=
 * Why is Venus so bright?
 * Because of its thick clouds covering around reflect most of the sunlight that reaches it (which is about 70%) back into space, as well as the close distance to Earth.
 * Venus can often be seen within a few hours after sunset or before sunrise.
 * Venus & Earth called as 'twin-planets'
 * Venus and Earth aare almost the same distance from the sun, as well as their size.
 * But it differs dramatically:
 * 1) Venus is some 100 times hotter than Earth
 * 2) It days more than 200 times longer
 * 3) The atmosphere on Venus is so thick that any spacecraft has survived on tis surface before being crushed is a little over two hours in longest.
 * 4) Earth has magnetic field but Venus does not

= ü **What we don't know? :**=
 * Life on Venus? (January 25, 2012) /[]
 * Venus Exploses? (March 5, 2012) /[]

= ü **Future plans or e****xpeditions:**= >
 * Launch spacerobes which are endurance to Venus thick clouds

__**Work Cited**__**:**
>> [|clopaedia/hutchinson/m0015700.htm]>
 * Basic Information from Wikipedia.
 * ""Discovery" of Venus." //Imagine The Universe! Home Page//. N.p., n.d. Web. 30 Mar. 2012. <[]>
 * "Venus (mythology) ." //Unlimited Broadband Packages: Broadband and phone packages | TalkTalk//. N.p., n.d. Web. 30 Mar. 2012. <[]
 * "Welcome to Solarpedia." //ThinkQuest : Library//. N.p., n.d. Web. 30 Mar. 2012. <[]>
 * "Ask an Astronomer for KIDS! - Why is Venus so bright in the night sky?." //Welcome to Cool Cosmos!//. N.p., n.d. Web. 30 Mar. 2012. <[]>