Taxonomy term


Mountains may cause huge waves in Venusian clouds

An enormous, stationary, bow-shaped feature has been detected in the cloud-tops of Venus’ thick, sulfuric acid-rich atmosphere. The structure, stretching more than 10,000 kilometers, remains fixed over Venus’ surface despite atmospheric winds that whip around the planet at 100 meters per second.

03 May 2017

Blogging on EARTH: Rarity the only reason for Venus transit fever?

If you read one or more stories leading up to yesterday’s transit of Venus across the face of the sun (or if you followed #VenusTransit on Twitter), you likely learned that the transit is akin to a solar eclipse — when the moon crosses directly between Earth and the sun, temporarily blocking part or all of the latter from our view — with the caveat that Venus only blacks out a small dot of the sun because of its distance from Earth. So what was all the fuss about? What was it about the celestial equivalent of watching a marble roll slowly across a dinner plate that brought people out in droves, from professional and amateur scientists to casual observers and families with young children?

06 Jun 2012

Venus in transit to the transit

5 June 2012 - Reader Elizabeth Talley snapped an iPhone photo of an ice ring around the sun yesterday afternoon in Port Charlotte, Fla., and unexpectedly also captured this image of Venus as it heads toward this evening’s rare celestial event — a transit of the sun. The seven-hour transit, during which the planet will appear as a small black disk moving across the solar face, will begin at 6:03 p.m.

05 Jun 2012

Venus' gentler, Earth-like past

Today, the surface of Venus is a hellhole, seared by scorching temperatures, crushing pressures and a toxic atmosphere of carbon dioxide with occasional clouds of sulfuric acid. But evidence is mounting that billions of years ago, Earth’s evil twin planet was a much more pleasant place — a second blue marble covered by water. The latest data come from the European Space Agency’s Venus Express spacecraft, which has spent three years constructing a detailed map of the surface of the planet’s southern hemisphere and finding new evidence for Earth-like plate tectonics and a watery past.

07 Oct 2009