Golden Recursion Inc. logoGolden Recursion Inc. logo
Advanced Search
Venus

Venus

Telluric planet, second closest from the sun

Venus is the second planet from the Sun. It is named after the Roman goddess of love and beauty. As the brightest natural object in Earth's night sky after the Moon, Venus can cast shadows and can be visible to the naked eye in broad daylight. Venus lies within Earth's orbit, and so never appears to venture far from the Sun, either setting in the west just after dusk or rising in the east a little while before dawn. Venus orbits the Sun every 224.7 Earth days. It has a synodic day length of 117 Earth days and a sidereal rotation period of 243 Earth days. As a consequence, it takes longer to rotate about its axis than any other planet in the Solar System, and does so in the opposite direction to all but Uranus. This means the Sun rises in the west and sets in the east. Venus does not have any moons, a distinction it shares only with Mercury among the planets in the Solar System.

Venus is a terrestrial planet and is sometimes called Earth's "sister planet" because of their similar size, mass, proximity to the Sun, and bulk composition. It is radically different from Earth in other respects. It has the densest atmosphere of the four terrestrial planets, consisting of more than 96% carbon dioxide. The atmospheric pressure at the planet's surface is about 92 times the sea level pressure of Earth, or roughly the pressure at 900 m (3,000 ft) underwater on Earth. Even though Mercury is closer to the Sun, Venus has the hottest surface of any planet in the Solar System, with a mean temperature of 737 K (464 °C; 867 °F). Venus is shrouded by an opaque layer of highly reflective clouds of sulfuric acid, preventing its surface from being seen from space in light. It may have had water oceans in the past, but these would have vaporized as the temperature rose under a runaway greenhouse effect. The water has probably photodissociated, and the free hydrogen has been swept into interplanetary space by the solar wind because of the lack of a planetary magnetic field.

As one of the brightest objects in the sky, Venus has been a major fixture in human culture for as long as records have existed. It has been made sacred to gods of many cultures, and has been a prime inspiration for writers and poets as the "morning star" and "evening star". Venus was the first planet to have its motions plotted across the sky, as early as the second millennium BC.

Its proximity to Earth has made Venus a prime target for early interplanetary exploration. It was the first planet beyond Earth visited by a spacecraft (Venera 1 in 1961), and the first to be successfully landed on (by Venera 7 in 1970). Venusian thick clouds render observation of its surface impossible in visible spectrum, and the first detailed maps did not emerge until the arrival of the Magellan orbiter in 1991. Plans have been proposed for rovers or more complex missions, but they are hindered by Venus's hostile surface conditions. The possibility of life on Venus has long been a topic of speculation, and in recent years has received active research.

Timeline

Further Resources

Title
Author
Link
Type
Date

News

Title
Author
Date
Publisher
Description
June 24, 2021
The Weather Channel
The study documented the geological activity through the movement of tectonic blocks residing in the crust of Venus. - Articles from The Weather Channel | weather.com
By Paul Rincon
June 22, 2021
BBC News
Scientists find evidence parts of Venus's rocky surface move around like bits of ocean pack ice.
Julia Musto
June 22, 2021
Fox News
Planetary scientists have reportedly found that the crust of Venus is fragmented and that its surface shows evidence of tectonic motion.
June 22, 2021
AP NEWS
Here's a look at what The Conversation, a non-profit source of explanatory journalism from experts in academia, is offering today.AP members may find The Conversation content on AP Newsroom or through AP webfeeds.
Paul Rincon - Science editor, BBC News website
June 22, 2021
news.yahoo.com
Scientists find evidence parts of Venus's rocky surface move around like bits of ocean pack ice.
SHOW MORE
Golden logo
By using this site, you agree to our Terms & Conditions.