European Space Agency Current Affairs - 2020

Saturn Moon Titan: Drifting faster than before

The moon of Saturn, Titan is drifting away faster than before. This has been identified by the researchers in NASA and also scientists in Italian Space Agency.


According to the data received from the Cassini Spacecraft of NASA, scientists believed that the Titan has been moving away from its host planet Saturn. However, the recent studies say that the moon is drifting 100 times faster. This is about 4 inches every year.

Science of drifting moons

The moons begin drifting away from their host planets because as the moons orbit, their gravitational pull on the planet creates temporary bulge in the planet. This bulge in turn increases the energy exerted by the planet on its moon. It also transfers the subsiding and bulging energy to its moon.

The earth’s own moon drifts 1.5 inches from the Earth every year.

There are around 82 moons that are orbiting Saturn.


The Cassini Space Craft Mission, or the Cassini-Huygens Mission is a joint space mission of NASA. Italian Space Agency and the European Space Agency. The mission was launched to study saturn, its moons, and rings.

Hubble Space Telescope: NASA’s longest living Space Telescope celebrates 30th anniversary

On April 24, 2020, NASA celebrated its 30 years of launch of Hubble Space Telescope. It is one of the longest living Space Telescopes in the world.

About Hubble Space Telescope

The Hubble Space Observatory is run in partnership with European Space Agency. The telescope has played a crucial role in the discovery of accelerating expansion of the cosmos. Also, it was Hubble Telescope that gave the evidence of existence of black holes in the centres of the galaxy.


The Telescope has its own unique design to be repaired and upgraded by the astronauts. This unique feature of the telescope has kept it alive throughout the technological upgradations since its launch. It is the longest living space telescope on the earth.

Cosmic Reef

On its 30th anniversary, the Hubble Telescope captured a Cosmic Reef. The Cosmic Reef is a group of stars that has an appearance of a coral reef undersea. Each star in the group is ten times the size of the sun. The stars are in a nebula. Nebula is a giant cloud of gas and dust. The nebula is formed due to the dust emitted from these stars. They are large Magellanic Clouds.

The reef has red colour glowing around. The red colour comes due to the glowing nitrogen and hydrogen gas. The blue colour in the reef is because of the presence of oxygen.