The nearest star is...
There are about ..... in our galaxy
A light year is a distance covered by light travelling at about ....... in one year
Supposed contacts were made with beings ......
It would take the fastest spacecraft about ..... to reach the nearest star
By the time we had sent our reply and received their response, the Earth would be
Створюйте онлайн-тести
для контролю знань і залучення учнів
до активної роботи у класі та вдома