Halley's Comet returns to the part of its orbit visible from Earth.
a persons birthday on the day of a leap year
The letter "Y."
The letter M.
The term for something that occurs every ten years is "decennial." This term is derived from the Latin word "decennium," which means a period of ten years. Decennial events can include census counts, anniversaries, and various planning cycles.
every 102 years
Jacob Jackson
Halley's Comet
the curiosity rover went into space eightand a half months ago so the curiosity rover will stay ther for two years straghit!:)
Every 4 years
Halley's Comet is a well-known comet that orbits the Sun approximately every 76 years. It last appeared in 1986 and will next be visible from Earth in 2061.
An event that occurs once every three years.
every two years
4 years 4 yearsThe Summer Olympics are held once every 4 years.
no, 4 years
every 4 years
4 years.
vicennial