According to research published in the journal Earth and Planetary Science Letters, Earth’s oldest rock (which is 4.1 billion years old) has been found in an Apollo 14 sample from the Moon. If confirmed, it’s an amazing discovery.
Earth, our beautiful blue planet. It is the third planet from the Sun, but above all, it is our home, the only astronomical object known to harbor life. Here are the best quotes about Earth.
Edgar Mitchell, the American naval officer and aviator, test pilot, aeronautical engineer and NASA astronaut and the sixth man to walk on the Moon, died on February 4, 2016, aged 85.