|
|
楼主 |
发表于 2013-2-21 12:58:08
|
显示全部楼层
jpegreader 发表于 2013-2-21 09:25 
目前还很冷门的项目呢，WIKI里没介绍，TC也还没几个人参加。
android平台上的项目越来越多是好事啊。 ...
我觉着这个项目比Milkway@home要现实一些。
Milkway的目的是creating a highly accurate three dimensional model of the Milky Way galaxy using data gathered by the Sloan Digital Sky Survey.
可是咱们还没有飞出太阳系的载人飞船呢
Asteroid的目的是监控太阳系内的小行星，不仅能够预测威胁，发现资源，为百年的后的太阳系内资源开发做准备。
- Besides basical research about asteroids, what could be the practical applications of the knowledge which is worked out here? Some asteroids cross the orbit of the Earth and there is a non-zero probability of the collision. In such cases, it is very practical to be able to predict the trajectory of the asteroid for long time in the future (tens of years). For an accurate prediction of the trajectory, also non-gravitational forces have to be taken into account, namely the so-called Yarkovski effect (the net force caused by the thermal radiation of the surface changes the orbit). And this effect depends on the orientation of the spin axis of the asteroid and its shape.
- Could it serve, in longterm view, for purposes as described by the user cesium_133? （I may have missed it, but how does knowing shape and spin materially benefit us in our knowledge of asteroids? There must be something to it, but the most important info we can get on these rocks is trajectory. What else is of equal or close importance? Contact probability with another asteroid, composition (one rock/several rocks/rubble pile)? I know you all have it worked out; I've just never heard of a project that figured out shape and orbital rotation...)
Very little is known about the physical properties of the members of asteroid population. By deriving shapes and spins of a significant part of the population, we can learn a lot about the origin and evolution of the whole Solar System.
- Could it be useful for the purposes of asteroid mining, as planned by Planetary Ressources?
Definitely! Nobody would send a mission to an asteroid without knowing the basic physical properties of that asteroid.
- Are there already contacts to other groups and institutions (like PR, ESA, etc.), whom could have use of the here produced knowledge?
We have contacts to other research groups, not to the space agencies directly.
不过没有高效的无工质引擎，仅凭现有的化学发动机想有效利用小行星资源是困难的。
Who wants to watch online the asteroid see http://www.ustream.tv/nasajpl2
Everyone, who is interested in the passing asteroid 2012 DA14, there is some information on this website
http://remanzacco.blogspot.cz/2013/02/close-approach-of-asteroid-2012-da14.html
What is this? This is true or fake? http://www.youtube.com/watch?feature=player_embedded&v=WaQIPBqoQ-Q
The text for the video: "Look just below the tail and see the UFO that catches up and runs into a meteor, breaks it and goes away".
The inner Solar System, from the Sun to Jupiter. Also includes the Main Asteroid Belt (the white donut-shaped cloud), the Hildas (the orange "triangle" just inside the orbit of Jupiter) and the Jovian Trojan's (green). The group that leads Jupiter are called the "Greeks" and the trailing group are called the "Trojans" (Murray and Dermott, Solar System Dynamics, pg. 107). This image is based on data found in the en:JPL DE-405 ephemeris, and the en:Minor Planet Center database of asteroids (etc) published 2006 Jul 6...http://commons.wikimedia.org/wiki/File:InnerSolarSystem-en.png?uselang=ru
以上的均来自Asteroid@home的Message Board，应该蛮有意思的，我没时间细看。 |
|
发表于 2013-2-20 23:50:14
，估计有很多有意思的信息。
发表于 2013-2-21 14:41:22
发表于 2013-2-21 19:16:00