Sun Current Affairs - 2020

Category Wise PDF Compilations available at This Link

NASA sends probes to map poles of the sun

NASA (National Aeronautics and Space Administration) of the United States and the ESA (European Space Agency) will send space probes to the sun to map its poles. The solar orbiter was launched on February 9, 2020.

Highlights

The probe will use gravitational influence of the Earth and Venus to position itself at 26 million miles from the sun. It is 95% of distance between the sun and the earth. The probe will map the poles for the first time. This will help scientists to observe the solar winds. The solar winds permeate the solar system.

Solar Winds

The solar winds are released from the upper atmosphere of the sun. These winds carry charged particles and magnetic clouds from the sun. These winds are capable of damaging life on the earth. Therefore, it is important to learn about these winds. They are now being filtered by the thick atmosphere around the earth.

The winds are a reason for the planets including the earth to revolve around the sun.

Get these updates on Current Affairs Today Android App

NASA: A Huge X Ray burst detected from outer space

NASA’s NICER (Neutron star Interior Composition Explorer) telescope detected a sudden spike of X Rays. The spike was caused by a massive thermo nuclear flash on the surface of a pulsar.

Pulsar

  • A Pulsar is a neutron star whose compact core is left behind when a massive star runs out of fuel. It later collapses under its own weight and explodes.
  • A Pulsar spins rapidly and becomes a host to several X-Ray emitting hotspot. As the object spins it produces regular pulses of high-energy radiation.

Findings

  • The Explosion releases as much as energy in 20 seconds as that released by the sun in 10 days.
  • The Explosion was caused as the hydrogen gas accredited and formed a disk. As the disk becomes denser, the gas ionizes. This traps more and more energy inwards causing the explosion

Significance

Like other astronomical bodies, the sun emits X Rays as well. Therefore, studying about these sources will help to learn about the future of the sun.

Get these updates on Current Affairs Today Android App