Light telescopes with a diameter of 30-50 meters are currently planned; probably larger ones will be built in the future. I believe the largest radio telescope has a diameter of about 300 meters. On the other hand, it is possible to connect (through a technique called interferometry) telescopes that are thousands of kilometers apart, so they have the resolving power (but not the light-gathering capacity) of a single telescope that size.
When the Hubble Space Telescope was relatively new, astronomers pointed the Hubble at a tiny area of space in which there were very few visible stars. They discovered that when there are no stars to get in the way, they were able to see thousands of galaxies back to the furthest depths of the the universe.
about 13 billion years ago the objects in the HDF were emitting the light we see today, thus the HDF objects are 13 billion years ago or 13 billion light years away. the universe appears to be 14.7 billion years old, making those images the youngest (or oldest depending on reference) things we've ever seen
by comparison our sun (sol) is 8 minutes ago, or 8 light minutes away.
or another way; the HDF objects are 122990400000000000000000 kilometres away.
- calculated by
13*10^9 years/billion years*
365 days/year *
24 hours/day *
60 mins/hour *
60 secs/min *
3000000 kilometres/sec (the speed of light)
We can only guess. The area of space covered was very tiny, but the depth of that observation was mind-boggling.
Back when the Hubble Space Telescope was fairly new (and just after a shuttle mission fixed its misshapen optics) the Hubble scientists pointed the Hubble at a particularly blank area of the sky, an area with no known stars AT ALL. One of the advantages of a space telescope over a terrestrial one is that you can make LONG observations - in this case, nearly a week long. This allows you to detect even very faint light sources.
Within that "blank" area of the sky, the Hubble found galaxies; COUNTLESS galaxies. Where you might see stars on a dark night, the Hubble detected galaxies, very distant galaxies.
The distance you can see with a telescope varies greatly from telescope to telescope. With a low-priced telescope, one could make out the rings of Saturn and the Andromeda Galaxy. With larger telescopes, the distance is increased dramatically. The Hubble telescope has taken pictures of galaxies which lie 12-13 billion light years away.
40 feet long and weighs approximetely 12 tons (in earth weight)
This would depend on what type of telescope you have and what magnification it supports. Mirror Reflector telescopes I believe are at the higher end of the market and can see further.
The HST uses mirrors . The main mirror is 94.5 inches diameter.
Hubble is about the size of a school bus, 40+ ft long, ~7 ft wide.
The world's largest is the Arecibo radio telescope located in Arecibo, Puerto Rico, and has a 305 m (1,001 ft) diameter dish which is fixed in the ground.
No, Hubble is in orbit around the Earth. Voyager 1, an unmanned spacecraft, launched September 5, 1977, is now the farthest man-made object from Earth.
If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.
the farthest the hubble telescope can see is about 150 million light years away!
The galaxy MACS0647-JD is 13.3 billion light-years away from the Earth and was visible to the Hubble Space Telescope.
20000 Varuna is a transneptunian object, meaning it is very far away, and not much is known about it. However, any object of its size is likely to have at least some magnetic field.
No, Hubble is in orbit around the Earth. Voyager 1, an unmanned spacecraft, launched September 5, 1977, is now the farthest man-made object from Earth.
370 miles
If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.
The main difference is that it is in orbit, above the atmosphere of the earth. This means that it can achieve a much better picture, since the light from the object in space wont be distorted by the atmosphere and its fluctuations. It means that the Hubble telescope can get away with using a much higher magnification.
The Hubble Telescope is a space telescope which is approximately 559 kilometers away from the surface of the earth in a "low earth orbit" which indicates that it is orbiting under 200 kilometers.
So that man can and see and study the stars in away not possible from earth.
In the late 1920s, the astronomer Edwin Hubble discovered that most of the galaxies he observed were moving away from Earth.
In the late 1920s, the astronomer Edwin Hubble discovered that most of the galaxies he observed were moving away from Earth.
Nope. It is moving too fast around the Earth to get a clear shot. It is designed to take pictures of things far away that are not moving quickly past its field of view, so anything on the ground would be a total blur.
yes
the farthest the hubble telescope can see is about 150 million light years away!
The Hubble space telescope changed the way we look at our universe. It revolves directly above our earth it was the first telescope that took amazing pictures of far away galaxies and dust and gas figures. The Hubble telescope was created by Edwin P. Hubble.