This week in Astro News:
The new comet Ikeya-Zhang swings round behind the Sun on March 18 and is then
at its closest to the Sun, writes NICK KOLLERSTROM.
The Sun is at zero Aries
at the Spring equinox, so the comet appears at the start of the zodiac in
Aries, and enters into Taurus on March 27. This comet has an unbelievably
large orbit and takes hundreds of years to go round! It goes way beyond Pluto
and was last passing by Earth in 1661. This was a time of great change with
the start of modern science and the Restoration. In that year Newton entered
into Trinity College Cambridge, the Royal Society was founded and the merry
monarch Charles II came back to the throne - it was all happening.
Experts believe this comet won’t be quite as bright as Hale-Bopp, but it will
break all records for the longest interval between comet appearances. Forget
Halley’s Comet by the way, that disintegrated after its last fly-by so we
won’t see it again. The Ikeya-Zhang comet shows real stamina in surviving the
icy wastes of outer space, it went twice as far away as Pluto! We’ll have a
good while to spot it after March 18, because conveniently enough after its
solar rendezvous (in between the orbits of Mercury and Venus) it will pass
close to Earth. It should then, in April, become about ‘third magnitude’
(the brightest stars are first magnitude) which means that Londoners won’t
see it though their neon-lit pollution-haze but rural dwellers should readily
spot it.
With luck its tail will look like a giant paintbrush ‘drawn swiftly
across the black wall of heaven.’ The new comet was spotted both by Kaoru
Ikeya of Japan and Daquing Zhang of China on February 1 last year. It was the
sixth comet that eagle-eyed Mr Ikeya has found!
Comet Ikeya-Zhang is not visible to the naked eye yet - so for more news
about which piece of space to watch, watch this space...
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