EVERYDAY SCIENCE

Detailed explanation-1: -It takes approximately 365.25 days for Earth to orbit the Sun-a solar year. We usually round the days in a calendar year to 365. To make up for the missing partial day, we add one day to our calendar approximately every four years. That is a leap year.

Detailed explanation-2: -The earth orbits the sun once every 3651/4 days-the period we know as a year. As we orbit the sun, the earth is spinning on its axis, making one revolution every 24 hours.

Detailed explanation-3: -It is equal to 365 days, 5 hours, 48 minutes, and 46 seconds, or 365.2422 days. The tropical year is used to keep track of seasons, planting, and harvesting.

Detailed explanation-4: -A Year is not Exactly 365 Days. Two of the most important are: Sidereal Year – A sidereal year is how long it takes the Earth to revolve one full 360 degree orbit around the sun as measured against the background stars. It takes 365 days, 6 hours, 9 minutes, and 10 seconds.

Detailed explanation-5: -This year is 365 days, 6 hours, 9 minutes and 9 seconds, or about 365.26 days long. Since this is the measurement most useful to astronomers, it makes sense that NASA used it to compare Earth to the TRAPPIST-1 exoplanets.