The instrument sports three cameras — each with different fields of view. The third sensor is available to perform scientific observations, precisely measuring the distance between stars and their relative motions. It is made of a special glass coated with aluminum and a compound that reflects ultraviolet light. It is 12 inches The first and second sets were larger, flexible panels, but produced less power.
Support systems Essential support systems such as computers, batteries, gyroscopes, reaction wheels, and electronics are contained in these areas. Communications antennas Hubble performs in response to detailed instructions from people on the ground. How do you protect and clean the lens of the Hubble Space Telescope?
Will Hubble be brought back to Earth when it has served out its usefulness, or will it be destroyed? What is the expected lifespan of Hubble? How big is Hubble? Of all the stunning photos captured by Hubble, which is your favourite? Do you think Hubble is still necessary? Why is Hubble able to see so much better than telescopes on Earth?
I heard that Hubble had problems during its first few years. What really happened? What are the Hubble Deep Fields? If the Hubble Space Telescope pointed to Earth, what resolution would the images have? What will be better about the James Webb Space Telescope? What has Hubble found out about the beginning of the Universe? Can Hubble take a picture of the landing site of the Apollo missions? Given the latest advances in Hubble instrumentation, image processing etc.
As the Big Bang could be similar to a conventional blast, and therefore the Universe developed around it, how is possible to state that there is not a centre of the Universe? How is possible to take a picture of the most ancient radiation and see it as it were around the photographers Hubble and then us?
How are the Hubble images in the image archive created? Top Why do some Hubble pictures have a strange staircase-like shape? Top What is your copyright policy? Top Why do stars have a cross-shaped distortion in most Hubble images? Top How do you protect and clean the lens of the Hubble Space Telescope? Top Will Hubble be brought back to Earth when it has served out its usefulness, or will it be destroyed? Top What is the expected lifespan of Hubble?
Top How big is Hubble? Top Of all the stunning photos captured by Hubble, which is your favourite? Top Do you think Hubble is still necessary? Top Why is Hubble able to see so much better than telescopes on Earth? Top I heard that Hubble had problems during its first few years.
Top What are the Hubble Deep Fields? Top Can Hubble take a picture of the landing site of the Apollo missions? Top Given the latest advances in Hubble instrumentation, image processing etc. Top As the Big Bang could be similar to a conventional blast, and therefore the Universe developed around it, how is possible to state that there is not a centre of the Universe? Top How are the Hubble images in the image archive created?
A poster-size image of the beautiful barred spiral galaxy NGC Top. High resolution images taken of Jupiter, Saturn and even Pluto can provide insights that can only be topped by planetary probes circling the planets. Images from the HST allows scientists on Earth to monitor changes in the planet's atmosphere and surface.
When the comet Shoemaker-Levy crashed into the Jupiter in , Hubble photographed the fatal collision. The aftermath revealed a great deal about the gas giant's atmosphere. Further, Hubble has seen what appears to be water plumes erupting from the moon Europa , a moon of Jupiter. The telescope made an initial observation in March and then saw a follow-up candidate plume in the same location in February In orbit for more than two decades, Hubble has provided scientists with a greater understanding of the planets, galaxy, and the whole universe.
Among the m ost amazing Hubble discoveries and research projects:. Find more in this gallery of awesome Hubble pictures. Saturn's Rings in Ultraviolet — A new look at some of the most well-known rings in the solar system. Karkoschka University of Arizona. Windhorst Arizona State University and H. Yan Spitzer Science Center, Caltech. When Galaxies Collide — Two colliding galaxies produced a long-tailed, ring-shaped galaxy. Sromovsky University of Wisconsin, Madison , H. Hammel Space Science Institute , and K.
Rages SETI. Hubble captures images of dust storms on the red planet at the polar caps. Butterfly Emerges From Stellar Death — A dying star ejecting dust and gas has created a beautiful planetary nebula. Cosmic Pearls From Supersonic Shockwave — Shock waves unleashed from a supernova are now colliding with the dust and gas around the star, heating the ring and causing it to glow. Challis, R. Sugerman STScI. Hubble's Fine Guidance Sensors help keep the telescope fixed on its target by sighting on guide stars.
Two of the three sensors find guide stars around the target within their respective fields of view. Once found, they lock onto the guide stars and send information to the flight computer to keep the guide stars within their field of view. The sensors are more sensitive than the gyroscopes, but the combination of gyroscopes and the sensors can keep the HST fixed on a target for hours, despite the telescope's orbital motion.
The HST can't use rocket engines or gas thrusters to steer like most satellites do, because the exhaust gases would hover near the telescope and cloud the surrounding field of view. The reaction wheels are flywheels, like those found in a clutch. When the HST needs to move, the flight computer tells one or more flywheels which direction to spin in and how fast, which provides the action force. In accordance with Newton's third law of motion for every action there is an equal and opposite reaction , the HST spins in the opposite direction of the flywheels until it reaches its target.
One of these limitations is that the HST can't observe the sun because the intense light and heat would fry its sensitive instruments. For this reason, the HST is always pointed away from the sun. That also means that Hubble can't observe Mercury , Venus and certain stars that are close to the sun either. In addition to the brightness of objects, Hubble's orbit also restricts what can be seen. Sometimes, targets that astronomers would like Hubble to observe are obstructed by the Earth itself as Hubble orbits.
This can limit the time spent observing a given object. Lastly, the HST passes through a section of the Van Allen radiation belts , where charged particles from the solar winds are trapped by the Earth's magnetic field.
These encounters cause high background radiation , which interferes with the instruments' detectors. It's impossible for the telescope to make observations during these periods. At the moment, Hubble's future is a bit uncertain. The final servicing mission was scheduled for Oct.
However, on Sept. A failure occurred in Hubble's command and data handling instruments, and it simply stopped capturing and sending the data needed to produce the deep space images that we know and love. However, before that can happen, NASA has to test the replacement part and train the astronauts how to install it.
In the meantime, the agency is also attempting to activate the backup channel for the command and data-handling system so that the telescope may resume transmitting data.
From its orbit approximately 1 million miles 1. To make these fascinating discoveries, the JWST will rely primarily on four scientific instruments: a near-infrared IR camera, a near-IR multi-object spectrograph, a mid-IR instrument and a tunable filter imager. But before we move on to the JWST and forget about Hubble, perhaps the hardworking telescope deserves a moment. Thanks to Hubble's unparalleled discoveries, captivating images of what lies beyond the Earth's atmosphere have been made accessible for everyone to enjoy.
From a rare alignment between two spiral galaxies to a powerful collision between galaxy clusters, Hubble has brought a little piece of the heavens closer to home. Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots.
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