One notable comet that is expected to make an appearance in the next five years is Comet 67P/Churyumov-Gerasimenko. This comet is known for being the target of the European Space Agency's Rosetta mission, which successfully landed a probe on its surface in 2014. Comet 67P/Churyumov-Gerasimenko has an orbital period of about 6.45 years, so it is expected to return to the inner solar system in the coming years. Astronomers and space enthusiasts will have the opportunity to observe this comet as it approaches the Sun and develops its characteristic coma and tail. Keep an eye out for updates and observations of Comet 67P/Churyumov-Gerasimenko as it makes its way back into the inner solar system in the near future.

a. It has an orbital period of about 6.45 years.
b. It was discovered by the European Space Agency.
c. It has never been observed by astronomers.
d. It has a tail that points away from the Sun.