These clouds block visible light, thereby limiting what astronomers can see using optical telescopes. Published by Jade Hampton Modified over 4 years ago. What do the following terms relate to? It sent back lovely, close-up images of the comet in the hours before impact. There is experimental evidence to support this.
In fact, our Universe is expanding faster than the speed at which light can travel through it. However, this is beyond the scope of GCSE. Feasible suggestions for improvements or extensions to the observations. And our Local Group lies just on the edge of that supercluster. Basically, it works like this…. If the question had instead given us the orbital radius r , and asked us to find the orbital period T , we would have applied the formula in reverse:
What are galactic clusters? Not bad for a simple experiment with sticks, conducted over years ago! Venus may be farther away, but it has an extremely dense atmosphere which acts like a planet-wide blanket: Thankfully, Earth has far fewer volcanoes and is much less volcanically active.
The further along you go, the later in time it gets. Every second, countless hydrogen atoms are fusing to form new, heavier atoms: After a few seconds, switch to the other eye. Plus, the build-up of heat could melt or cohstellation your telescope.
Is it pure coincidence? Are sunspots permanent features of the Sun? Its temperature is around 2 million Kelvin. Of the 10,or-so stars visible to the naked eye, only a few hundred have been named.
Evidence for this hypothesis relies on striking similarities between the composition of rocks found on Earth and the Moon; yet, at the same time, Moon rocks reveal unique traits of their own. The greatest genius of all, Sir Isaac Newton, would later use their constellatiin as the basis for his own, declaring: Thus, a collision between Earth and another planet seems the most plausible way of accounting for similarities, while allowing for some coursdwork.
GCSE Astronomy Controlled Assessment
Spelling, punctuation and grammar used with reasonable accuracy. Here are the doursework letters of the Greek alphabet, and how to pronounce them:. What is the typical composition of a comet? This line is the ecliptic. What is a galaxy?
With this system, you can identify every visible star in the sky by knowing the 24 letters of the Greek alphabet, plus the 88 constellation names. They appear large, flat, smooth and dark-grey in colour. I watched with a mix of awe and fear. The numbers involved are so complex that liberties are often taken to keep things looking smooth.
GCSE Astronomy Controlled Assessment – ppt download
By that time, thousands of sailors had perished at sea due to an inability to determine their east-west position. This spinning disc is superheated to millions of degrees Celsius by friction.
Since that time and even before itspace probes have analysed the far side, transmitting data and images back to Earth. In fact, the true length of a day is 23 hours, 56 minutes. Quasars or Quasi-Stellar Radio Sources can emit everything from X-rays to radio waves, and sometimes gamma rays. Earth also lies tilted on its axis by These telescopes have another advantage over optical ones: This may seem like a complex way to determine stellar distances, but we cannot extend a tape-measure to the stars!
If we cube that number, we see