Why Does The Hubble Space Telescope Get Such Clear Pictures? Though even these photos are an enhanced version, since most celestial objects, such as nebulas, emit colors that are too faint for human eyes to make out. It takes a telescope, letting light build up in its CCD over time, to see the rich hues
Why Do We Use A Radio Telescope To Observe The Center Of Our Galaxy? Radio waves also travel unimpeded by the dust in our galaxy so we can detect other galaxies that lay beyond the centre of our galaxy along the line of sight. These galaxies are impossible to view using visible light and optical
Why Do Radio Telescopes Have Such Poor Resolution? Radio telescopes consist of very large dishes constructed of metal plates which focus the radio waves to a point above the centre of the dish where the receiver is located. Radio telescopes have to be very large because the long wavelengths of the EM radiation result in
Why Was There Probably No Life In The Galaxy 12 Billion Years Ago? There were no heavy elements. Why was there probably no life in the galaxy 12 billion years ago? Orbiting at a perfect balance. Why can’t we see a galaxy 15 billion light-years away? C. Because looking 15 billion light-years away means looking
What Is The Importance Of Astronomy? Astronomy has and continues to revolutionize our thinking on a worldwide scale. In the past, astronomy has been used to measure time, mark the seasons, and navigate the vast oceans. As one of the oldest sciences astronomy is part of every culture’s history and roots. What is astronomy and
Can Astronomy Be A Hobby? Astronomy is an outdoor nature hobby, so the best way to begin is to go out into the night and learn the starry names and patterns overhead. Buy yourself an inexpensive planisphere, which shows the constellations visible at any time throughout the year. Can stargazing be a hobby? Stargazing is
Why Are There Limitations To Using Telescopes On Earth? Because of the protective effect of the atmosphere, ground-based telescopes can’t pick up the lethal, invisible portions of the electromagnetic spectrum such as ultraviolet rays, x-rays and gamma rays. These parts of the spectrum help astronomers extract better pictures of stars and other space phenomena. Do
Why Do Space Telescopes Make Clearer Pictures Than Earth Telescopes? Space telescopes have the advantage of being above the blurring effects of the Earth’s atmosphere. In addition, there are many wavelengths from the electromagnetic spectrum that do not reach Earth because they are absorbed or reflected by the Earth’s atmosphere. Why do telescopes that are
Are There Any Man-made Objects Visible From Space? Artificial structures visible from Earth orbit without magnification include highways, dams, and cities. The Great Wall of China, often cited as the only human-made structure visible from space, is not visible from low Earth orbit without magnification, and even then can be seen only under perfect conditions.
Can Anyone Use The Hubble Space Telescope? In contrast with other space telescopes, the Hubble is open for public use if in accordance with their rules and regulations for usage. Each year more than 1,000 proposals are reviewed, and approximately 200 are selected. You would need to make contact with the Goddard Space Flight Center