What’s the similarity between the two? Both of them orbit the sun. If you read on you will discover more interesting facts about their other similarities and of course their differences as well.
Halley has an orbital circumference around the sun of about 5.27 billion kilometers which takes it farther than Neptune before it makes a u turn back to appear in our skies once more. It will return to present another heavenly spectacular approximately every 76 years.
Lovejoy on the other hand appears on our skies approximately every 8,000 years. That’s a might wide orbit around the sun. Its orbital circumference is about 90 billion kilometers. It falls short in reaching any quasars, pulsars or black holes.
I won’t make an attempt to compute when Comet Lovejoy will re appear in our skies again. I’d hate to think if the earth will still be here or mankind for that matter.
Halley will be seen in our heavenly skies in 2061.
What are comets really? Picture a snowball while it travels in the air after throwing it. Comets are the same except there are dusts exploding while it travels in the space and that famous tail to boot.
Of course they are made of something much more than frozen water. The body of a comet is made up of ice forms of methane, ammonia, and carbon dioxide gases. The accumulation of space dusts in a comet happens during the formation of the solar system. Comets orbit the sun without going out of the boundaries of our Milky Way Galaxy.
Some comets meet their fiery end when their orbit bring them closer to sun and is pulled by the sun’s gravity. They plunge to the gigantic ball of fire, and there goes thousands of years of existence. Comets don’t maintain the same orbit because they are subject to the presence of the planets and their ever changing position.
Halley’s Comet was discovered by an Englishman astronomer Edmund Hailey and the only comet that will possibly appear twice in a person’s lifetime.
Comet Lovejoy was discovered by an Australian amateur astronomer in 2011. For a moment it eclipsed the popularity of the most famous planet of all time, Hailey. No worries there. Lovejoy will be long forgotten before it will come back again to grab the limelight.
Is there a possibility they’ll grace the skies at the same time? That will indeed be a memorable night. But who’ll be watching them then? Some of the later human generations may gaze at them from the moon, Mars, or other earth-like planets lurking just behind Pluto.