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Author Topic: Green comet to become visible for first time in 50,000 years  (Read 517 times)

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Offline Kamaji

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Green comet to become visible for first time in 50,000 years
« on: January 10, 2023, 03:13:52 pm »
Green comet to become visible for first time in 50,000 years

By Chloe Whelan, News.com.au
January 10, 2023

A bright green comet will appear in the night skies above Earth, visible for the first time in 50,000 years.

The recently discovered comet, which was given the catchy name C/2022 E3 (ZTF), will soar its closest to the sun on Jan. 12, and will become visible in the Northern Hemisphere in the morning sky.

In Australia, though, it will become visible from early February as it makes its closest pass by Earth on Feb. 2 when it will be a mere 42 million kilometers away.

Comets can be distinguished from stars by their streaking tails of dust and energized particles – which will cause this one to glow bright green. The glow is caused by an envelope that firms around the comet as it passed by the sun and its icy exterior instantly turns into gas.

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Source:  https://nypost.com/2023/01/10/green-comet-to-become-visible-for-first-time-in-50000-years/
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Offline Smokin Joe

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Re: Green comet to become visible for first time in 50,000 years
« Reply #1 on: January 11, 2023, 10:04:01 am »
 :bkmk:
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Offline roamer_1

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Re: Green comet to become visible for first time in 50,000 years
« Reply #2 on: January 11, 2023, 01:40:20 pm »
Ominous... As in omen.
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Offline Hoodat

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Re: Green comet to become visible for first time in 50,000 years
« Reply #3 on: January 11, 2023, 01:53:26 pm »
So it's orbit is elliptical?
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Offline Kamaji

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Re: Green comet to become visible for first time in 50,000 years
« Reply #4 on: January 11, 2023, 01:58:13 pm »
Quote from: Hoodat on January 11, 2023, 01:53:26 pm
So it's orbit is elliptical?

Most comets have elliptical orbits.
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Offline Hoodat

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Re: Green comet to become visible for first time in 50,000 years
« Reply #5 on: January 11, 2023, 02:09:20 pm »
Quote from: Kamaji on January 11, 2023, 01:58:13 pm
Most comets have elliptical orbits.

Some do not.  Like Kohoutek, for example.  And the periods of elliptical orbits can vary greatly.
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If a political party does not have its foundation in the determination to advance a cause that is right and that is moral, then it is not a political party; it is merely a conspiracy to seize power.

-Dwight Eisenhower-


"The [U.S.] Constitution is a limitation on the government, not on private individuals ... it does not prescribe the conduct of private individuals, only the conduct of the government ... it is not a charter for government power, but a charter of the citizen's protection against the government."

-Ayn Rand-

Offline Kamaji

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Re: Green comet to become visible for first time in 50,000 years
« Reply #6 on: January 11, 2023, 02:09:45 pm »
Quote from: Hoodat on January 11, 2023, 02:09:20 pm
Some do not.  Like Kohoutek, for example.  And the periods of elliptical orbits can vary greatly.

Hence the word "most".
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Offline Kamaji

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Re: Green comet to become visible for first time in 50,000 years
« Reply #7 on: January 11, 2023, 02:11:03 pm »
Quote from: Hoodat on January 11, 2023, 02:09:20 pm
Some do not.  Like Kohoutek, for example.  And the periods of elliptical orbits can vary greatly.

Well, according to one source, the orbit is an open parabola:  https://purneauniversity.org/comet-c-2022-e3-ztf-location/#:~:text=Comet%20C%2F2022%20E3%20ZTF%20Orbit,-To%20know%20about&text=It%20will%20reach%20the%20perihelion,and%20never%20be%20back%20again.
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Offline Hoodat

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Re: Green comet to become visible for first time in 50,000 years
« Reply #8 on: January 11, 2023, 02:15:59 pm »
Quote from: Kamaji on January 11, 2023, 02:09:45 pm
Hence the word "most".

Hence the word "some".  I just find it fascinating that a comet will visit us again in 50,000 years, so that if I am still around, I can look out for it.
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If a political party does not have its foundation in the determination to advance a cause that is right and that is moral, then it is not a political party; it is merely a conspiracy to seize power.

-Dwight Eisenhower-


"The [U.S.] Constitution is a limitation on the government, not on private individuals ... it does not prescribe the conduct of private individuals, only the conduct of the government ... it is not a charter for government power, but a charter of the citizen's protection against the government."

-Ayn Rand-
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