梦~~

放学了，我在学校里，想把一些旧的参考书和课本搬回家。有很多，一个人搬不完。于是我叫我的好朋友，佩珍帮我搬。我们要把书搬去我的车。但我又想不起我把车泊在哪里了。我们就继续走过长廊，然后到了食堂遇到了另一个好朋友，阿辉。我们就要一起走。接着我们骑上了脚踏车。我和佩珍是同一架。很奇怪的脚踏车，她在前面踏，我在后面控制generator,让她踏得更快更顺。而阿辉就在后面踏另一架脚踏车跟着我们。看到他，想起了OXX PXXXX里的青雉，但却是披上黑披风的。

踏着踏着，我们不知道是在海岸边还是在海上踏，因为看到右边是大海。左边有一个海上餐厅（ = =”）,我知道我们在东海。。。岸，因为看到餐厅上有kuantan这个字。我们就说必须踏到码头，才有办法回到家。所以我们就继续往前踏。

接着我们累了，看到一片绿地有几棵树，就停下来乘凉休息。
然后两只狗走前来，一只小的一只大的。小的一直跳上来要咬我，我就一直闪因为很疼。同时我们也看到前后的树上都放了好几个小的熊公仔，不知被谁放在树干上站着，坐着。我就想说用相机拍下来。

天也开始飘起小雨。我就蹲下来摸摸小狗的头，叫它赶快回家咯，要下雨咯！接着我要拍照时，发现树上小布熊旁突然出现一个女子。我也把她摄入镜头。
突然看见镜头外的不远处的马路上有很奇怪的东西。一个人，骑在一只长形的乌龟上！头是乌龟头，可是身体却像站立着的巨大蛞蝓。这怪乌龟长得好像人这么高。他们发现了我们，都转过头来看着我们。我们都很害怕，骑上脚车拼命的踏赶快要逃走。

朋友问我该走哪一条路，因为有分岔路，可我不知道，但怕后面的怪物追上来，就说往左转，然后我们转进了一个花园住宅区。我们继续踏，路的对面竟然有一架很大架的军用飞机正在要降落。我们心想，这是什么地方啊?怎么有军机？也不管那么多总之回家的码头就在前方，后面的怪物也不知道有没有追过来，我们还是拼命的踏。出到大路，竟然是单边路，前面的车闪着大灯往我们冲来，我们吓得赶快往路边闪去。阿辉说没时间找路了，就算是单边路也要继续走。我们继续踏，路变的很宽很大。。。然后闹钟响，我要起床吃药啦！！！！

Dark Matter Mystery Explained: A Reader's Guide (Infographic)

Source SPACE.com: All about our solar system, outer space and exploration

Most of the universe is made up of dark energy, a mysterious force that drives the accelerating expansion of the universe. The next largest ingredient is dark matter, which only interacts with the rest of the universe through its gravity. Normal matter, including all the visible stars, planets and galaxies, makes up less than 5 percent of the total mass of the universe.

Astronomers cannot see dark matter directly, but can study its effects. They can see light bent from the gravity of invisible objects (called gravitational lensing). They can also measure that stars are orbiting around in their galaxies faster than they should be.

This can all be accounted for if there were a large amount of invisible matter tied up in each galaxy, contributing to its overall mass and rotation rate.

Astronomers know more about what dark matter is not than what it is.

Dark matter is dark: It emits no light and cannot be seen directly, so it cannot be stars or planets.

Dark matter is not clouds of normal matter: Normal matter particles are called baryons. If dark matter were composed of baryons it would be detectable through reflected light. [Gallery: Dark Matter Throughout the Universe]

Dark matter is not antimatter: Antimatter annihilates matter on contact, producing gamma rays. Astronomers do not detect them.

Dark matter is not black holes: Black holes are gravity lenses that bend light. Astronomers do not see enough lensing events to account for the amount of dark matter that must exist.

Structure in the universe formed on the smallest scales first. It is believed that dark matter condensed first to form a “scaffolding,” with normal matter in the form of galaxies and clusters following the dark matter concentrations.

Scientists are using a variety of techniques across the disciplines of astronomy and physics to hunt for dark matter:

• Particle colliders such as the Large Hadron Collider.
• Cosmology instruments such as WMAP and Planck.
• Direct detection experiments including CDMS, XENON, Zeplin, WARP, ArDM and others.
• Indirect detection experiments including: Gamma ray detectors (Fermi from space and Cherenkov Telescopes from the ground); neutrino telescopes (IceCube, Antares); antimatter detectors (Pamela, AMS-02) and X-ray and radio facilities.

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暗物质

维基百科，自由的百科全书

在宇宙学中，暗物质（dark matter）又稱為暗质，是指無法通過电磁波的觀測
進行研究，也就是不與电磁力產生作用的物质。人们目前只能通过重力产生的
效应得知，而且已經發现宇宙中有大量暗物质的存在。

现代天文学通过重力透镜、宇宙中大尺度结构的形成、微波背景辐射等研究表明：
我们目前所认知的部分，即重子(加上電子)，大致占宇宙的4％，而暗物质則占了
宇宙的23%，还有73%是一种导致宇宙加速膨胀的暗能量。暗物质的存在可以解决
大爆炸理论中的不自洽性，对结构形成也非常关键。暗物质很有可能是一种
（或几种）粒子物理标准模型以外的新粒子所構成。
对暗物质(和暗能量)的研究是现代宇宙学和粒子物理的重要课题。