Planetary Discoveries

• NASA's Kepler telescope has discovered over 1,200 planets orbiting distant stars
• Approximately 50 of these planets could be Earth-like and fit for life
• The search for radio transmissions from these planets has begun
• Discovering a signal would indicate the presence of inhabitants with technological knowledge
• Before 1781, only seven celestial bodies were known to humans
• William Herschel discovered Uranus in 1781, suggesting more planets may exist
• Neptune and Pluto were discovered in the following century and a half
• In 1995, a planet was discovered orbiting a star 50 light years away
• This planet was at least half the size of Jupiter and had extremely high surface temperatures
• The discovery of these planets has expanded our knowledge of the universe.

Test your knowledge of space exploration and the search for extraterrestrial life with this quiz on the discoveries of planets beyond our solar system. From the groundbreaking discoveries of Kepler to the ongoing search for radio transmissions, this quiz will challenge you to recall key facts and figures about space exploration. Discover how our understanding of the universe has expanded over the years and learn about the latest developments in the search for distant planets that could be home to life as we know it.