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DAILY NEWS ANALYSIS

  • 28 January, 2023

  • 6 Min Read

Green Comet

Green Comet

After 50,000 years, the Comet C/2022 E3 (ZTF), sometimes known as the "Green Comet," is now approaching Earth.

More on the news:

  • The US-based Zwicky Transient Facility (ZTFwide-field )'s survey camera made the initial discovery of the comet in March 2022.
  • Following its first discovery by the Zwicky Transient Facility (ZTF), the comet was named C/2022 E3 (ZTF).
  • It is currently travelling away from the sun along its own orbit after coming close to it in the middle of January.
  • Several locations across the world may now see the comet as it approaches Earth.
  • The comet, which originates from the Oort cloud, is predicted to orbit the sun once every 50,000 years.
  • "Home of the Comets" refers to the Oort cloud at the frontier of our solar system.

Coming close to Earth:

  • Comets can be dragged out of their habitats in the Kuiper Belt or Oort Cloud by the gravitational attraction of a planet or star. A comet may be steered toward the Sun by this tug.
  • These comets' rerouted courses resemble lengthy, stretched ovals. They become heated and erupt a luminous head that can reach the size of a planet, spewing gases and dust.
  • When this dust burns off, it leaves behind what appears to us on Earth as a trail of light from a distance.
  • As a result, comets are frequently observed emitting blue, white, or even green light.

Regarding Green Comet:

  • Astronomers in the US just made the discovery of the Green Comet in March 2022.
  • The comet's head, which glows green and radiates a whitish light behind it, is known as the "Green Comet" (often called the tail of the comet).
  • The comet is presently departing from the Sun along its own orbit after having already contacted the Sun.
  • Diatomic carbon, which are two carbon atoms bonded together, is assumed to be the source of the comet's head's green glow. When stimulated by sunlight UV energy, the molecule emits green light.
  • According to reports, the green comet may be just 27 million miles away.
  • According to NASA, the comet may be visible with binoculars and telescopes, and it may even be visible with the unaided eye in a clear night sky, from Earth at a distance of 2.5 light minutes.

About Comets

  • The solar system formed 4.6 billion years ago, leaving behind these ancient objects.
  • NASA estimates that 3,743 comets are currently known as of January 2023.

Composition:

  • The Sun is orbited by comets, which are frozen rocky or gas-filled objects consisting of dust and ice. Scientists occasionally refer to comets as filthy snowballs or snowy dirtballs if the comet is composed primarily of ice material rather than stony fragments.
  • Orbits: Comets have orbits, just as other celestial bodies.
  • Comets with brief periods Most of them managed to escape the solar system. Some can be found in the Kuiper Belt, a vast disc that extends past Neptune's orbit (the eighth and final planet). They orbit the Sun for fewer than 200 years.
  • Long-period comets are found in the Oort Cloud, the solar system's most remote region, which is around 50 times farther from the Sun.
  • The Oort Cloud is formed like a sphere. The comet with the longest known orbit completes one round of the Sun in excess of 250,000 years.

Source: The Indian Express

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DNA

28 Apr,2023

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