NASA’s Parker Solar Probe was at the right place at the right time to capture a unique view of comet NEOWISE on July 5, 2020. Parker Solar Probe’s position in space gave the spacecraft an unmatched view of the comet’s twin tails when it was particularly active just after its closest approach to the Sun, called perihelion.
Daily Current Affairs Quiz 2020
Key-Points
Comets or “dirty snowballs” are mostly made of dust, rocks and ice, the remnants from time the solar system was formed over 4.6 billion years ago.
Comets can range in their width from a few miles to tens of miles wide.
As they orbit closer to the sun, like in the case of C/2020 F3, they heat up and release debris of dust and gases that forms into a “glowing head” that can often be larger than a planet.
The debris forms a tail that can stretch out to millions of miles. Each time a comet passes the sun, it loses some of its material and it will eventually disappear completely as a result.
While there are millions of comets orbiting the sun, there are more than 3,650 known comets as of now, according to NASA.
Comets may be occasionally pushed into orbits closer to the sun and the Earth’s neighbourhood due to forces of gravity of other planets.
