article_snippet: Venus is slightly smaller than Earth but has a similar mass.
article_snippet: One day on Venus lasts as long as 243 Earth days.
article_snippet: One day on Venus thick and toxic atmosphere is made up mostly of carbon dioxide and nitrogen, with clouds of sulphuric acid droplets.
article_snippet: One day on Venus's believed that One day on Venus atmosphere contributed to a runaway greenhouse effect that made the planet inhospitable.
article_snippet: On Venus strong winds move the upper atmosphere 225 mph (360km/h), circling the planet every four to five Earth days.
article_snippet: But the planet takes almost 243 Earth days to complete an orbit - meaning strong winds are much faster than the rotation speed of the planet.
article_snippet: Winds on Venus can circle the planet in four to five Earth days.
highlights_snippet: Winds on Venus can circle the planet in four to five Earth days .
  