Earth, a vibrant ocean world with breathable air, active tectonics, and a protective magnetic field, uniquely creates the perfect habitable environment for sustaining diverse life. Earth and Mars have ...

The size of the celestial bodies are knowledge as learned at school, but I think that opportunities to realize are rare in everyday life. It is this movie "Star Size Comparison HD" that explains the ...

Eleven years ago today, NASA made an intriguing announcement. Using the Kepler space telescope, the agency had discovered an exoplanet the size of Earth located in the habitable zone of another star.