I am going to college next year and I am really fascinated about cosmology, I have been ever since I was about 6. I want to study astrophysics in university but I want to improve my chance of becoming successful in astrophysics. For my GCE A levels I have chosen chemistry, physics, maths and biology. I want to know what books I should read, what activities I should do etc, to improve my knowledge and ability of astrophysics.
Archive for May, 2009
What is the difference between astronomy and cosmology? Are they the same thing? Also what is astrophysics?
Greetings. I request an elaborate answer, about the careers available for a PhD in theoretical astrophysics. I also request information about the courses and institutions to get along with to hold a PhD degree in the subject. Serious answers appreciated.
Thanks in advance!
Thanks! All aswers are great… Specially applies to Larry… Thanks mate!
Gee, Will… Thanks
Astronomy Dictionary
May 23
The globe of astronomy is so complex that a beginner might at very first really feel overwhelmed when attempting to accomplish even a fundamental understanding from the topic. A curious person may be turned off from understanding about this type of fascinating topic merely simply because they do not know exactly where to start. The truth from the matter is that any kind of info be it a book, magazine, television show, or documentary is fine for beginning your journey into the globe of astronomy. A telescope isn’t even a necessity when very first starting out.
For somebody who is really a full beginner within the globe of astronomy, a easy star information is really a ideal start. These could be discovered at any bookstore, or by looking on the internet. A star information usually will give you info about not just the main stars, but also the constellations created up of them, and also the planets from the Solar Program. An atlas is really a similar kind of book, with possibly a tad a lot more in-depth info which will interest an astronomy buff who is really a tad a lot more educated about the topic. For this purpose, novices might wish to also pick up an astronomy dictionary. An astronomy dictionary runs on essentially exactly the same concept of the conventional dictionary. Typical astronomical terms are listed in alphabetical order using the descriptions and facts next towards the title. An astronomy dictionary is also helpful for somebody who has currently begun stargazing and would like a quick reference information in situation he or she forgets the name of the particular star. All from the planets and meteors are also frequently contained in an astronomy dictionary, producing it useful for the night time of stargazing.
There’s a wealth of astronomy media that’s devoted strictly to constellations. This isn’t terribly surprising thinking about that constellations have captured the imaginations of males and women for millennia. These celestial patterns are capable to become observed using the naked eye almost each night time, but identifying them might be hard without having prior know-how of their positions, a useful reference information, or an astronomy dictionary.
Nowadays, numerous telescopes are programmed to automatically discover a star, planet, or constellation within the night time sky via GPS positioning. This requires the guesswork and effort out of locating heavenly bodies, but some really feel that it also requires away the really spirit of discovering beauty within the sky. This really is for the person to determine, but for the beginner, this type of program definitely couldn’t hurt. At any rate, there’s definitely a wealth of info obtainable to anybody who’s curious about astronomy, from an atlas to an astronomy dictionary. As well significantly info ought to in no way be a deterrent to anybody who’s interested in understanding about any type topic.
Astronomy is really a fascinating concept that individuals of all ages can appreciate getting a component of. Getting the correct gear for astronomy is really crucial simply because it will have an effect on what you’re capable to determine. 1 great item to invest in is astronomy binoculars. They’re really inexpensive and also you is going to be capable to determine incredible views of numerous celestial bodies within the sky with them.
Maintain in mind although that astronomy binoculars are intended to provide you a view of numerous objects available such as the moon, constellations, and comets. If you would like to determine particulars from the planets or the crater that appear on Jupiter you won’t be capable to accomplish this with only astronomy binoculars. You’ll require the power of the great telescope.
Numerous astronomy binoculars have extended magnifiers on them. This would be to compete using the numerous versions of telescopes about the marketplace. These are a lot more costly than the fundamental ones but you might discover they’re well worth it. They will assist you to decrease the perceived distance among you and also the object.
A few of the greatest versions of astronomy binoculars are created in foreign countries. They’re usually discovered for the lower price as nicely. To assist make sure your astronomy binoculars will last a lengthy time buy a set that have coated lenses as nicely as weatherproof. A few of the greatest astronomy websites could be viewed within the rain or with moisture within the air but you do not want it to harm your gear.
Some versions of astronomy binoculars are created to become so durable that they arrive having a lifetime warranty. You might need to spend a lot more for such a warranty but it’s nicely well worth not getting to spend for an additional set of astronomy binoculars once again.
An additional great investment for those who appreciate astronomy is really a tripod. This permits you to have a stable location to star gaze from, particularly should you strategy to accomplish so for the lengthy period of time. Even one of the most experienced astronomers can get tired from the position of searching straight up for hours at a time.
Understanding Planet Mars
May 19
Mars was first noticed by the Babylonians, around 400 BC, but they called it Nergal. The Egyptians saw the planet, but weren’t impressed and they named it Har Decher, which means The Red One. The Romans called the planet Mars, naming it after the god of war. In 1609, Galileo was the first to see Mars through a telescope. The first map of Mars was drawn in 1659. Christiaan Huygens, in the late 1600s, was the first person to consider life on Mars.
The American probe, Mariner 4, made the first successful flyby of Mars, in 1965. The first time any thing landed on Mars was in 1971; these were two Soviet probes, but they lost contact almost as soon as they landed. Then NASA, in 1975, sent two orbiters to Mars; each orbiter had a landing device and both were able to land on Mars. The successful launch of the Mars Odyssey orbiter, in 2001, led to the discovery of water and ice deposits on Mars. An orbiter, launched in 2003, detected methane in the Mars atmosphere, which is important in trying to determine life on Mars.
The discovery of methane led people to believe that Mars must have had a source of gas on the planet, at some time in its history. The gas could’ve came from, volcanic activity or a crashing comet, but no one knows. Because of its thin atmosphere, Mars has a hard time warming up; its highest temperature is around 20 degrees Celsius. During the winter, the surface of Mars can get so cold that as much as 25% of the atmosphere will turn into ice.
Over the years, the US, Japan, Europe and the Soviet Union, have all managed to send various spacecrafts to study Mars. Over 60% of all spacecrafts either never made it to Mars or were completely useless by the time they got there. Who knows how much money was spent on those unsuccessful journeys. When it comes to exploring space, countries have an insatiable need to be first. It seems like the journey into space is as much about publicity as it is about gathering information.
There have been many reasons given for the need to explore Mars. Of course, the simplest reason is because it’s there. Humans are always looking for the next challenge, to try do something that hasn’t been done. Or maybe information gathered from Mars can somehow benefit earth. Some think that space travel is a great way to inspire kids to become scientist or work in a science field. Business is also a consideration, if the atmosphere on Mars could help lead to a medical breakthrough a lot of companies will become rich.
Mars is an unknown, just like all space travel. Before Mars, the Moon was the goal. Many trips have been made to the Moon, but where are the concrete benefits? Where is that major human advancement that can be credited to the Moon? The one thing that is known, is the tremendous amount of money it takes to send spacecrafts to Mars. There always seems to be enough money to investigate the solar system, or start a war, but there’s never enough to help people who really need it.
Numerous astronomy sites provide what are known as “astronomy photos from the day”. Websites with astronomy photos from the morning will demonstrate, like the name insinuates, a image that’s transformed every day and can range from the nebula, a star, a constellation, or any other celestial physique. Usually, astronomy photos from the morning will coincide with an object in space that’s noticeable in the time that the image is displayed. For example, when Venus is extremely noticeable and fairly close to Earth, the web site may display a image of Venus in all of her beauty. If the Horsehead Nebula occurs to really bright within the southern hemisphere, the web site may demonstrate a image of stated nebula that may only be used from the really high-powered telescope.
These photos from the morning are helpful for numerous causes. Frequently, these photos are in a really higher detail and are used from the telescope having a higher level of magnification. A typical stargazer wouldn’t necessarily be capable to determine this object with as significantly clarity or closeness simply because he or she is most likely to become unable to afford the gear required for such a high-resolution photograph. Some photos from the morning are used from various locations about the Earth. This really is simply because particular constellations, stars, or comets are only noticeable to individuals on particular hemispheres at any provided time. A web site that provides a breathtaking view of Sirius from Australia, for example, is really a fantastic gift to those of us within the northern or western hemisphere that’s unable to determine the star whatsoever.
NASA’s web site provides spectacular photos from the morning which are usually unrivaled among other websites. This makes ideal sense, thinking about that NASA has not just the very best gear about the planet for stargazing but also has the budget required to create these gorgeous photos a reality. This web site could be reached by going to apod. nasa. gov. The “apod” really stands for astronomy image from the morning. Anybody thinking about gorgeous astronomy photos ought to do themselves a favor and refer to this web site. It’s unrivaled when it comes to stunning pictures from the cosmos. The web site for the well-liked Astronomy Magazine also includes a image from the morning section which has some similarly breathtaking beauty. You are able to achieve this web site by going to astronomy.com. Anybody who’s thinking about astronomy would be performing themselves an immense favor by searching in the photos from the morning on either NASA’s or Astronomy Magazine’s sites. Numerous from the pictures are unrivaled by something of this earth.
Judging by the names, my guess would be:
Astrophysics: Study of the physics and structure of the sky and what it contains (planets, etc).
Astronomy: General study of the sky, planets, etc and general behaviour of it without going too deeply into the physical make-up of it.