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Georgia State University *

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Astronomy

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Apr 3, 2024

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Astronomy 1000 Worksheet #3 Due Wednesday, Mar. 06 (Each question is worth 2 points) Student Name: ____________________________ 1. During our in-class lectures, your instructor introduced the planets Mercury and Venus by showing you an image of a transit of these two planets, so that you could see them projected against the face of the sun. You were not shown similar transit events for the remaining planets of the solar system, and for a very good reason. Explain why. The reason why there aren't similar transit events for the remaining planets of the solar system is because of what a transit event is. Transit events are when planets are directly between the Earth and the sun, which the planets Mercury and Venus are. However, no other planets in our solar system are in these positions, which is why there aren't any transit events for them because it isn’t possible. 2. You should never go to Venus, even if given the opportunity. Give at least two reasons why. (Seriously, don’t do it!) There are multiple reasons why no one should go to Venus. However, two big reasons why no one should go to Venus are the average surface temperatures which reach up to 800 degrees Fahrenheit, and the surface pressures of Venus, which are intense enough to crush submarines. 3. Explain why the maria of the moon have a darker coloration compared to the rest of the moon’s surface. The maria of the moon has a darker coloration compared to the rest of the moon’s surface because of the lava. The lava consists of dark, dense, iron-rich rock otherwise known as basalt rock, which is less reflective, making the moon have a dark coloration.
Astronomy 1000 Worksheet #3 Due Wednesday, Mar. 06 4. NASA and various other space agencies have sent many unmanned satellites and rovers to other planets. Name any two of them and give a brief, one sentence description of the object(s) that mission visited and a major discovery or observation it made. Two unmanned satellites are Mariner 10 and Messenger: “MErcury Surface, Space ENvironment, GEochemistry, and Ranging”. Mariner 10 lasted from 1973-1975 and was made to fly to multiple planets, which it did, visiting Mercury and Venus. Mariner 10 discovered many different things about the planets, but one thing that was discovered was Venus’s weak magnetic field. Messenger: “MErcury Surface, Space ENvironment, GEochemistry, and Ranging” lasted from 2004 to 2015, and took pictures of Mercury, discovering the opposite side of Mercury’s surface texture which is described as “weird terrain”, but officially called Caloris Basin which are large craters on its surface. 5. The planet Mars and the moons Europa and Titan are generally seen as the best places to look for evidence of life in the solar system beyond Earth’s atmosphere. For each of these three worlds, give a brief one-sentence explanation as to why. The reason why the planet Mars and the moons Europa and Titan are usually the best places to find evidence of life in the solar system beyond Earth. For Mars, the main reason why is because a long time ago, Mars had areas where liquid water, which was once stable, and below the surface and in addition, shared water patterns like Earth. The moon Europa has a rocky core that is covered in water ice that is heated by its interior, which has the same force that made a volcanic wasteland, which created a subsurface ocean. Lastly, the moon Titan has frozen water in the forms of lakes and rivers on its surface due to its surface temperatures being -300 F and has methane and ethane in those lakes and rivers, which in its liquid form, could help support life.
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