It's your best chance to spot a once-in-a-lifetime green comet - here's how
Comet C/2022 E3 (ZTF) will be at its very brightest as it makes its closest fly-by to Earth, merely 28 million miles away. Read on for a guide on how best to spot it, including tips on when to head outside, where to look, and any extra equipment you might want.
It's fair to say this is an opportunity that doesn't come around very often.
For the first time in some 50,000 years, a green comet has this month been making a fly-by past Earth - and your best chance to spot it has now arrived.
Comet C/2022 E3 (ZTF) has been already visible through binoculars and telescopes, but will look so bright on Wednesday and Thursday night that you could be able to see it with the naked eye.
Here's how to make sure you have a spectacular view.
What time should you be on the lookout?
The first two nights of February were earmarked as the best time to see the comet because that's when it will be closest to the Earth - a mere 28 million miles away.
It means it will be visible from both the northern and southern hemisphere.
Dr Greg Brown, an astronomer at Royal Observatory Greenwich, tells Sky News that those in the UK should wait until after midnight for the optimal view.
"In northern latitudes, like the UK, this part of the sky is low above the horizon early in the evening at this time, so waiting until after midnight, when it is much higher, is your best bet," he says.
"The comet is at its brightest about now and will quickly drop in brightness as it starts to move away from us."
Where should you be looking?
The comet has travelled through the Corona Borealis, Bootes, Draco, and Ursa Minor constellations on its way to Camelopardalis the giraffe.
But you might be best served looking roughly halfway between Ursa Major and Minor, the two bears, Dr Brown says.
If that has you scratching your head, you might want to consider a stargazing app like Night Sky or SkyView to help locate the constellations.
By pointing your smartphone's camera up at the night sky, such apps will use augmented reality to tell you which constellations you're looking at and offer tips on how to spot comets.
As for your location on the ground, Dr Brown suggests a place with "minimal light pollution".
He adds: "Beyond that, as long as your sky is clear and you have a view of the part of the sky the comet is in, you should have a good chance."
And I don't need any extra equipment?
C/2022 E3 (ZTF) falls just below the brightness that all but guarantees its visibility with the naked eye, but there's a reasonable chance that it will be.
But Dr Brown says that a decent pair of binoculars or small telescope would of course make a difference.
Sky News reader John Short took the photo at the top of this article using a Vaonis Vespera smart telescope.
As for those aforementioned apps, some of them don't update regularly enough to include newly found objects like C/2022 E3 (ZTF), but the major ones at the top of your phone's app store search results should do.
And either way, they'll be useful for helping you find those constellations if you're unsure.
Dr Brown also recommends trying web-based resources like The Sky Live, which track new and popular interstellar objects and can help plan your observation.
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