Who / What
Venus is the second planet from the Sun in our Solar System. It is a terrestrial planet often described as Earth's "twin" or "sister" due to its similar size, mass, and surface gravity.
Background & History
As a planet, Venus formed approximately 4.5 billion years ago from the solar nebula. Historically, it has been known since antiquity and is one of the brightest objects in the night sky. Key milestones in its study include early telescopic observations and modern exploration by space probes.
Why Notable
Venus is notable for being the planet with the orbit closest to Earth's and for having the most similar physical dimensions to Earth among all Solar System planets. Its significance is underscored by its extreme differences, particularly its thick, dense atmosphere and complete lack of liquid water, making it a critical subject for comparative planetary science.
In the News
Venus remains relevant in current planetary science and exploration discussions. Recent developments often focus on new research into its atmosphere and surface conditions, and proposed missions to study its climate and geology, which matter for understanding planetary evolution and the limits of habitability.
