
Did you know that Alpha-Centauri was the second nearest star to planet Earth, the first one being the Sun. It is 4.2 light-years away from us! When astronomers measure the distance of stars (from planet Earth) they do not use…
A leap year is a calendar year that contains an additional day (29th of February) added to keep the calendar year synchronised with the astronomical year or seasonal year (which contains roughly 365¼ days or 365.242375 days to be more…