Our Planets & Solar System

Tag: Questions about planet earth

  • How old is the Earth?

    If you are wondering how old the Earth is, the estimated age of the Earth is around 4.54 billion years old give or take a few million years. This age is based on a combination of evidence, including the age of the oldest-known rocks, the age of lunar samples brought back by Apollo missions, and…

  • How fast does the Earth spin?

    It’s strange to think that Earth the planet we are living on is continually spinning 24 hours a day, 7 days a week and 365 days a year as it orbits the Sun. One full orbit of the Sun takes a full year and and is the basis for the formation of our calendar. It…