Hubble and the Moon

To the best of our current knowledge, moon is the only natural “official” satellite orbiting our planet.

This, however, has often been challenged by some researchers over time who call some near-earth objects with synchronized orbits as “second moons” [1, 2].

While a number of these observations have been discarded by the scientific community, there still are objects which include temporary satellites, quasi-satellites, trojans, horseshoe orbit objects and more.

This is actually an exception in the solar system with 70 known moons for Jupiter.

The Hubble telescope took this splendid shot of our moon in 1991.

Earth's Moon
https://www.nasa.gov/image-feature/hubble-shoots-the-moon

References

  1. Sepharial, A. The Science of Foreknowledge: Being a Compendium of Astrological Research, Philosophy, and Practice in the East and West.; Kessinger Publishing (reprint), 1997, pp. 39–50; ISBN 1-56459-717-2
  2. Bakich, Michael E. The Cambridge Planetary Handbook. Cambridge University Press, 2000, ISBN0-521-63280-3, p. 148
  3. Wikipedia article https://en.wikipedia.org/wiki/Claimed_moons_of_Earth