CURRENT AFFAIRS

Detailed explanation-1: -VISIONS-2 will fly two rockets into the northern polar cusp, where it will use an imaging technique to map oxygen outflow from the aurora.

Detailed explanation-2: -When a rocket burns propellants and pushes out exhaust, that creates an upward force called thrust. To launch, the rocket needs enough propellants so that the thrust pushing the rocket up is greater than the force of gravity pulling the rocket down.

Detailed explanation-3: -With over 1, 900 flights since its debut in 1966, the Soyuz is the most frequently used launch vehicle in the world as of 2021.

Detailed explanation-4: -NASA’s Launch Services Program is responsible for launching uncrewed rockets delivering spacecraft that observe the Earth, visit other planets and explore the universe-from weather satellites to telescopes to Mars rovers and more.

Detailed explanation-5: -Like Earthly engines, rocket engines operate using combustion. Since all forms of combustion need oxygen, rockets carry an oxidizer like liquid oxygen up to space with them. That means they don’t have to rely on surrounding air like a car engine does.