It would depend on the size of the telescope.
Venus is about the same size as the Earth, but has a much higher albedo, meaning that it reflects a greater percentage of light that Earth does. Venus is also closer to the Sun, which means that the sunlight it does receive is more intense. Still, Venus reflecting the Sun's light from 160 million miles away is STILL the third-brightest object in the sky, after the Sun and Moon.
We can easily see Saturn from Earth, even though Saturn is much farther from the Sun and doesn't receive as much light. So I think we'd be safe in saying that the Earth would be a naked-eye object from anywhere in the solar system.
However, from any further away than Neptune, the angular distance between the Sun and the Earth would be pretty small; it would be like trying to pick out Mercury, which is tough to do.
The five naked eye planets are Mercury, Venus Mars, Jupiter and Saturn. Saturn is the most distant from the sun.
number the planets farthest to closest to earth
The largest distance between Earth and Mercury is when they are at opposite ends of the Sun. So the farthest they can be is 0.38+1 = 1.38 AU.
Aphelion 152,098,232 km Perihelion 147,098,290 km
Slightly more or less than 92 million miles.
The farthest humans have ever gotten from Earth would be the vicinity of the Moon during the Apollo program. This would be around 370 000 km.
number the planets farthest to closest to earth
The largest distance between Earth and Mercury is when they are at opposite ends of the Sun. So the farthest they can be is 0.38+1 = 1.38 AU.
About 162 million miles
distance from earth farthest star
2000 feet away
Earth is at its maximum distance from the sun in July. In 2012, it was farthest from the sun on July 4th or 5th.
Neptune is the remotest of the eight planets, and its distance is 30 astronomical units, which means its distance from the Sun is 30 times the Earth's distance from the Sun.
The distance between the moon and the Earth varies from around 356,400 km to 406,700 km at the extreme perigees (closest) and apogees (farthest).
The farthest distance from earth a human being has traveled is 401,056 km, to the moon.
There is no such distance. Gravity has no limit. There are forces of gravity between the lint in your pocket and the smallest grain of sand on the farthest beach on the other side of the farthest planet, in orbit around the farthest star, in the farthest galaxy from Earth. Of course, the farther apart two objects are, the less the gravitational forces between them are. But the forces are still there.
That point in the moon's orbit is called the "apogee".
Aphelion 152,098,232 km Perihelion 147,098,290 km