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Some sort of telescope was involved in the discovery of ALL known planets - about a thousand, at the time of this writing - with the exception of the five planets that can be seen with the naked eye.
The planets positions change all the time. Some of the planets are easier to see. When they are visible, Venus, Mars, Jupiter and Saturn can easily be seen with the naked eye, if you know where to look. The other planets need a set of binoculars or a telescope to see them. Check the site below to help you locate the planets. Currently Jupiter can be seen for a while after sunset, as a bright object low and towards the south.
Some comets can be seen without any mechanical help if they are large enough or come close to the earth. Any sort of telescope will help you see more comets if you know where to look and what to look for.
In some cases, yes. It depends on the magnitude of the supernova and how close it is. Some are even bright enough to be seen during daylight.
The james webb telescope, the chandrayan-2, the hubble space telescope etc. are some of the examples.
Mercury, Venus, Mars, Jupiter, and Saturn are visible from Earth without a telescope. At certain times, for those with excellent vision, Uranus is visible. Some planets are best viewed just before dawn.
There is no single planet named Kepler, rather it is part of the designation given to planets discovered using the Kepler telescope. Most of the planets discovered using the telescope are larger than Earth, but some are smaller.
easy. look downward. if you are asking if you were standing on the moon, then yes because in some place on the earth somewhere is always shined on by the sun
That's simple. They could look through a telescope and see some planets near the earth, but not all. Astronauts travel in space and study them.
Technically, you can see every planet right up to Pluto (Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune). The last two are of course much tougher to find, since they aren't visible to the naked eye. The other 5 planets can be seen with the eye, so you will obviously be able to see them magnified slightly. If you bought a decently cheap telescope, you SHOULD be able to see Jupiter's Satellite system (the Gallilean moons) and Saturn's rings. Mars is pretty boring in tiny telescopes, and Venus displays some detail.
Astronomers has been going to some of the planets. The advanced telescope can observe the planets more closely. and the satellites has been agthering pictures and datat from the space.
The moons of Jupiter and Saturn, the planets of Neptune and Uranus, the millions of rocks in the Asteroid belt.