The minimum speed required to leave Earth's atmosphere is called

Yuri Gagarin, aboard Vostok 1, became the first human in space, reaching an altitude of

The minimum speed a rocket needs to leave Earth's atmosphere is 

Modern rockets takes _________ on average to pass the Kármán line.

ISS is in which orbit?

The average travel time to the Moon is approximately ________ days.

The distance between Earth and Mars during opposition is about ________ million kilometers.

The first successful mission to Mars was ________ 1, launched in 1975.

On May 5, 1961, Alan Shepard became the first American in space aboard

During his flight, Alan Shepard reached a maximum altitude of

The exact time for a space mission depends on several factors. Which of the following is one such factor?

Which factor affects the exact time of a space mission?

Which spacecraft achieved the fastest flight to the Moon, taking only 8 hours and 35 minutes?

When did Apollo 11 astronauts land on the lunar surface?

The record for the longest journey to the Moon is held by

____________ is the hypothetical travel of spacecraft between star systems.

The Curiosity rover was launched in which year?

The rovers Spirit and Opportunity reached Mars in ________.

At Voyager 1’s current speed, a journey to Proxima Centauri would take ________ years.