2007-05-30 07:20:25 · 9 answers · asked by black moon 1 in Science & Mathematics ➔ Astronomy & Space
No extra-solar planets.
In fact, even Neptune, within our solar system, cannot be seen naked eye. You'd need good binoculars to be able to see it as a very faint point of light IF you knew exactly where to look and you need a telescope with 200x to be able to (barely) see it as a disk, not a point.
If a planet the size of Neptune (4 times as large as Earth) were to be around the nearest star(s) at 4 light-years, it would appear fainter by a factor of 27,365.
Naked-eye limit is 6th magnitude for most people.
Neptune is 8th magnitude.
Neptune at 4 light-year (with same absolute luminosity) would be 19th magnitude, barely visible (by eye) in the newer 10-metre-diameter telescopes.
2007-05-30 07:45:08 · answer #1 · answered by Raymond 7 · 1⤊ 0⤋
No, you can not see any planets outside the solar system with the naked eye. Usually planets outside the solar system are detected by the "Wobble" they induce on their parent star. Only one planet outside our solar system has ever been photographed using a telescope (European Southern Observatory), and that picture is fuzzy at best. The parent stars, however, may bee seen with a naked eye on a good night if their brightness is magnitude 7 or greater (magnitude 6 is brighter than magnitude 7).
2007-05-30 07:41:14 · answer #2 · answered by George E 1 · 0⤊ 0⤋
No planets outside our own solar system can bee seen. Not even with a large telescope. Extrasolar planets can only be detected by very small changes to make to the light of the star they orbit.
2007-05-30 07:25:28 · answer #3 · answered by campbelp2002 7 · 3⤊ 0⤋
you will discover them because of the fact they're close sufficient and sufficiently huge to be certain with the bare eye. Mars and Venus are our closest friends interior the photograph voltaic device different than for our Moon. Mars' Distance from Earth varies from 36 million miles to over 250 million miles. the closest achieveable opposition between Earth and Venus is 38 million kilometers (23.7 million miles). No planet gets closer to Earth than Venus. And for the main distant factor, regrettably, Venus would be invisible to Earth because of the fact it is going to likely be lost interior the glare of the sunlight. yet at that factor, while that's on the different area of the photograph voltaic device, Venus could be 261 million km (162 million miles) away. Mars is seen now interior the morning twilight and Venus is seen interior the night twilight. February seen Planets Morning Twilight...Mars, Jupiter (2/7-28), Saturn, Mercury. night Twilight...Venus, Uranus (2/a million-14). Conjunction...Mars & Jupiter (2/17). Conjunction...Jupiter & Mercury (2/24). March seen Planets Morning Twilight...Mars, Jupiter, Saturn (3/a million-8), Neptune, Mercury (3/a million-22). night Twilight...Venus (3/a million-24), Saturn (3/8-31). All night...Saturn (3/8). Conjunction...Mars & Mercury (3/a million).
2016-12-30 07:24:26 · answer #4 · answered by ? 3 · 0⤊ 0⤋
not outside our solarsystem but we can see (some) of the ones in our solar system
2007-05-30 07:25:17 · answer #5 · answered by miranda g 1 · 0⤊ 0⤋
Only the stars and most times, they're so dim, we can't see them either
2007-05-30 07:23:11 · answer #6 · answered by Gene 7 · 0⤊ 0⤋
no only if they are as massive as 10 supergiant stars
2007-05-30 08:15:55 · answer #7 · answered by Anonymous · 0⤊ 0⤋
planets are a LOT smaller than stars...but some say we can see it...i doubt it tho....the stars we see are a lot bigger than our sun
2007-05-30 07:29:33 · answer #8 · answered by Anonymous · 0⤊ 1⤋
no...way!
2007-05-30 07:23:55 · answer #9 · answered by Georgia D 1 · 0⤊ 0⤋