2007-05-30 07:17:11 · 4 answers · asked by black moon 1 in Science & Mathematics ➔ Astronomy & Space
Mercury, Venus, Mars, Jupiter and Saturn have been known about since antiquity and are all naked-eye objects, easily visible (albeit not at all hours of the night nor all year round).
The 4 Galilean Moons of Jupiter (Ganymede, Callisto, Io and Europa). the asteroid 4 Vesta and the planet Uranus are all 5th magnitude and can therefore be only seen under good viewing conditions.
Neptune and Pluto are too faint for naked eye observation.
Venus which can be as bright as - 4.6 magnitude can be seen during daylight hours too.
2007-05-30 07:53:15 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Mercury, Venus, Mars, Jupiter, and Saturn are all naked eye planets. Uranus, Neptune, Pluto, and all asteroids are telescopic objects. Except on rare occasions when an asteroid comes unusually close to Earth and can be see naked eye.
2007-05-30 14:23:31 · answer #2 · answered by campbelp2002 7 · 3⤊ 1⤋
Saturn, Mercury, and for people with good eyesight (and assuming excellent viewing conditions) Uranus.
2007-05-30 14:21:31 · answer #3 · answered by Nature Boy 6 · 0⤊ 0⤋
Everyone is missing the obvious one!!!!!!
Earth is really easy to see lol.
2007-05-30 14:36:30 · answer #4 · answered by Anonymous · 1⤊ 0⤋