Did you know ...? 你知道嗎？

Solar system: Did you know that our sun is located near a small, partial arm called the Orion arm. (1) If our solar system is only part of an arm in the Milky Way, it would be impossible for anyone in the next 100 years to take a trip around the Milky Way. Galaxy: Did you know that the center of our galaxy is a massive black hole. (2) That is the thing that is pulling all the solar systems together. Space travel: Did you know that next year three people going to the International Space Station are paying $55 million each for their seats on a SpaceX rocket.(3) It is really cool that rich tourists can buy tickets to space. Other: Did you know that Saturn’s center is a dense core of metals like iron and nickel. (4) It is cool because Dr.Lee does not know it and if we can land there we could have a bunch of new materials.

太陽系：您是否知道我們的太陽位於被稱為獵戶座臂的小型局部臂附近。 （1）如果我們的太陽系只是銀河系的一部分，那麼在接下來的 100 年裡，任何人都不可能繞銀河系旅行。 銀河：你知道我們銀河系的中心是一個巨大的黑洞嗎？ (2) 那是把所有太陽系拉在一起的東西。 太空旅行：你知道明年去國際空間站的三個人每人支付 5500 萬美元購買 SpaceX 火箭上的座位。(3) 有錢的遊客可以買太空票真是太酷了。 其他：你知道嗎，土星的中心是鐵和鎳等金屬的緻密核心。 (4) 這很酷，因為李博士不知道，如果我們能在那裡著陸，我們就能擁有一堆新材料。 References:

1. Barnett, A. (2017, November 8). The Milky Way Galaxy | NASA Solar System Exploration. The Milky Way Galaxy. https://solarsystem.nasa.gov/resources/285/the-milky-way-galaxy/
2. Morrow, A. (2016, March 31). Hubble’s Journey to the Center of our Galaxy | NASA. Hubble’s Journey to the Center of Our Galaxy. https://www.nasa.gov/feature/goddard/2016/hubble-s-journey-to-the-center-of-our-galaxy
3. Roulette, J. (2021, October 13). How Much Does it Cost to Fly to Space with Blue Origin? - The New York Times. How Much Does a Ticket to Space on New Shepard Cost? Blue Origin Isn’t Saying. https://www.nytimes.com/2021/10/13/science/space/blue-origin-ticket-cost.html
4. Barnett, A. (2021, August 18). In Depth | Saturn – NASA Solar System Exploration. Saturn. https://solarsystem.nasa.gov/planets/saturn/in-depth/

Solar system: Did you know that there might be a real ninth planet in our solar system? I thought there were only eight planets in our solar system, but in 2016 a person called Mike Brown discovered a hypothetical planet called Planet X. 你知道嗎，在我們的太陽系中可能有一顆真正的第九顆行星。我以為我們的太陽系中只有八顆行星，但在 2016 年，一個名叫邁克·布朗的人發現了一顆假設性的行星： Planet X。

Galaxy: Did you know that there is a supermassive blackhole in the center of our Milky Way. I thought the Milky Way only had a bunch of stars. 你知道我們銀河系的中心有一個超大質量黑洞嗎？我以為銀河系只有一堆星星。

Space travel: Did you know that NASA spent millions of dollars just for making a pen that can write in space. I thought people used pencils in space. 你知道嗎，美國太空總署花了幾百萬美元只為了做出一隻能在太空寫字的原子筆。我以為太空人都用鉛筆寫字。

Other: Did you know that time traveling could be possible in space if your speed is fast enough? 你知道嗎，只要你的速度夠快，在太空有可能就會發生時空旅行。

1. NASA. (n.d.). Planet X. NASA Solar System Exploration. Retrieved March 2, 2022, from https://solarsystem.nasa.gov/planets/hypothetical-planet-x/in-depth
2. Ghod, C. (2022, January 12). The Milky Way’s supermassive black hole is leaking gas. Space.Com. https://www.space.com/supermassive-black-hole-leaking-in-milky-way
3. Curtin, C. (n.d.). Fact or Fiction?: NASA Spent Millions to Develop a Pen that Would Write in Space, whereas the Soviet Cosmonauts Used a Pencil. Scientific American. Retrieved March 2, 2022, from https://www.scientificamerican.com/article/fact-or-fiction-nasa-spen/
4. Stein, V. (n.d.). Is time travel possible? | Space. Retrieved March 2, 2022, from https://www.space.com/21675-time-travel.html

by Larissa Kuo

Solar system: Did you know that Mercury is still shrinking? Mercury is always the smallest among all planets, but it is even shrinking more. 你知道水星還在縮小嗎？ 水星一直是在所有星球中最小的，但它的體積還在越來越小。

Galaxy: Did you know that the milky way was born about 12.5 billion years ago and is still growing ever since. The milky way is big enough already, but it is still expanding. 你知道嗎，銀河系誕生於大約 125 億年前，並且一直在增長。

Space travel: Did you know that one space travel launch cost $450 million. I can pay my sister’s 4 year college tuition. 你知道嗎，發射一次火箭要花大約450萬嗎？

Space Travel Facts for Kids. (2013, June 23). Easy Science For Kids. https://easyscienceforkids.com/all-about-space-travel/ published, E. H. (2017, February 15). 25 Weirdest Facts About the Solar System. Space.Com. https://www.space.com/35695-weirdest-solar-system-facts.html published, E. H. (2017, February 15). 25 Weirdest Facts About the Solar System. Space.Com. https://www.space.com/35695-weirdest-solar-system-facts.html

Solar system: Did you know you can see Venus from the Earth. I always thought that we can only see the sun and moon on the Earth. 你知道從地球上可以看到金星嗎？我一直以為我們只能在地球上看到太陽和月亮。

Galaxy: Did you know The Milky Way is part of a cluster of around 3,000 galaxies called the Local Group. I always thought that there are more galaxies 你知道銀河係是由大約 3,000 個星系組成的本星系團的一部分嗎？我一直認為有更多的星系

Space travel: One space shuttle launch costs $450 million. I always thought that it was $ 3 million. 一次航天飛機發射要4.5億美元，我一直以為是3億美元

Other: The space shuttles are now in museums! I always thought that they would keep the old one and then try to make it better. 航天飛機現在在博物館裡！ 我一直認為他們會保留舊的，然後嘗試使它變得更好

References: Top 10 Facts about The Solar System. (n.d.). Fun Kids - the UK’s Children’s Radio Station. Retrieved March 3, 2022, from https://www.funkidslive.com/learn/top-10-facts/top-10-facts-about-the-solar-system/ Pultarova, T., & published, N. T. T. (2021, December 3). Milky Way Galaxy: Facts About Our Galactic Home. Space.Com. https://www.space.com/19915-milky-way-galaxy.html Space Travel Facts for Kids. (2013, June 23). Easy Science For Kids. https://easyscienceforkids.com/all-about-space-travel/ Top 10 Facts About Space Shuttles! (n.d.). Fun Kids - the UK’s Children’s Radio Station. Retrieved March 3, 2022, from https://www.funkidslive.com/learn/top-10-facts/top-10-facts-about-space-shuttles/

Solar system:

Did you know the formation of the solar system began about 4.6 billion years ago with the collapse of gravity in a giant interstellar molecular cloud. Most of the mass in the solar system is concentrated in the Sun, and the most massive of the remaining celestial bodies is Jupiter. 太陽系的形成大約始於46億年前一個巨型星際分子雲的重力塌縮。太陽系內大部分的質量都集中於太陽，餘下的天體中，質量最大的是木星。

Galaxy:

Did you know astronomers now estimate that there are 100 billion galaxies in the observable universe. 天文學家現在估計在可觀測的宇宙中有1000億個星系。 Did you know when we talk about interstellar travel: all other galaxies are moving away from our own galaxies due to the expansion of the universe. Galaxies far from the Milky Way are fleeing faster than nearby galaxies. 當我們談論星際旅行時：由於宇宙的膨脹，所有其他的星系都在遠離我們自己的星系。遠離銀河系的星系比附近的星系逃離速度更快。 Did you know that based on the gravitational pull of the star alone, galaxies rotate faster than predicted. Astronomers deduce that the extra gravitational pull comes from dark matter, which does not emit or reflect light. 僅根據恆星的引力，星系的旋轉速度比預測的要快。天文學家推斷，額外的引力來自暗物質，它不發射或反射光。

Space travel:

Amazon founder Jeff Bezos also flew into space 9 days later on the spacecraft of its Blue Origin company; Tesla founder Musk's space company SpaceX, in September 2021, carried 4 civilians on space tourism, completing the first all-civilian space trip of mankind. Another Japanese billionaire, Yusaku Maezawa, boarded the International Space Station (ISS) in December 2021 aboard a Russian spacecraft. 亞馬遜創辦人貝佐斯也在9天後搭乘旗下藍源公司的太空船飛上太空；特斯拉創辦人馬斯克的航太公司SpaceX，則是在2021年9月載著4名平民進行太空旅遊，完成人類首次全平民的太空旅行。另一位日本富豪前澤友作則是在2021年12月搭乘俄羅斯的太空船，登上了國際太空站。

References:

Solar System. (2022). In Wikipedia. https://en.wikipedia.org/w/index.php?title=Solar_System&oldid=1094214220 20個關於星系的常識，你知道幾個？. (n.d.). Retrieved 22 June 2022, from https://kknews.cc/science/zp6995p.html 2021年太空探索大突破 推進太空發展動能(影音). (2022, January 5). Rti 中央廣播電臺. https://www.rti.org.tw/news/view/id/2121308

1.Did you know that Milky Way has about 90% is dark matter and about 10% of luminous matter? Dark matter are the matter that we can’t see, and luminous matter are the matter that we can see with our eyes. The scientist also tell us if we don’t has any dark matter, then the stars will seems orbit much slower. I don’t know if has any dark matter, I thought is just dark.

1.你知道銀河系有90%左右是暗物質，10%左右是發光物質嗎？暗物質是我們看不見的物質，而發光物質是我們肉眼可以看到的物質。這位科學家還告訴我們，如果我們沒有任何暗物質，那麼恆星的軌道似乎會慢得多。我不知道是否有任何暗物質，我認為只是黑暗。

2.Did you know Milky Way just a medium sized galaxy? I already think Milky Way galaxy is very big! But actually there has a much more galaxy is bigger than Milky Way! The largest galaxy we found is called IC 1101, and it is bigger than Milky Way for 20 times!

2.你知道銀河系只是一個中等大小的星係嗎？我已經覺得銀河系很大了！但實際上還有比銀河系更大的星系！我們發現的最大星系叫做IC 1101，比銀河系大20倍！

3.Did you know every galaxy except Milky Way they have a huge black hole at the middle? Has one galaxy called called Sagittarius A*. This black hole has an estimated diameter of 14 million miles. which does not include the disk of mass being drawn into it. That’s mean we born at earth is very lucky! We don’t need to care about when we will just goes into a huge black hole! I think this is very interesting, because at before I only heard some people say they guess is like this. Now it just becomes true!

3.你知道除了銀河系之外的每個星系，它們的中間都有一個巨大的黑洞嗎？有一個叫做人馬座A*的星系。這個黑洞的直徑估計為 1400 萬英里。這不包括被吸入其中的質量盤。那就是說我們出生在地球上是非常幸運的！我們不需要關心什麼時候會進入一個巨大的黑洞！我覺得這很有趣，因為在之前我只聽到有人說他們猜是這樣的。現在它變成了真的！

4.did you know Everything in space is always moving? The earth is moving around the sun, and the sun is moving with Milky Way, the Milky Way cruises through the space, and it is moving really fast!! It is moving at about 600 km/s or 2.2 million km/hr! I thought that they are all staying at the same place, but actually it is moving and is very fast!!!

4.你知道太空中的一切都在運動嗎？地球繞著太陽轉，太陽也跟著銀河轉，銀河在太空中穿梭，速度真快！！它以大約 600 公里/秒或 220 萬公里/小時的速度移動！我以為他們都在同一個地方，但實際上它正在移動並且非常快！

(This is a video I found on YouTube about Milky Way is moving around!!!)

click me to watch how Milky Way moving!!!

（這是我在 YouTube 上找到的關於銀河系移動的視頻！！！）

點我看銀河系如何移動！！！

10 Facts about the Milky Way—Versant Power Astronomy Center and Maynard Jordan Planetarium—University of Maine. (2015, September 18). https://astro.umaine.edu/10-facts-about-the-milky-way/amp/

By Yuna Wu

Solar system:

Did you know the distance from Jupiter to Neptune is really far. The distance from Jupiter to Neptune is five times the distance from Earth to Jupiter.

你知道木星到海王星的距離超遠的嗎。木星到海王星的距離是五倍地球到木星的距離。

Galaxy:

Did you know that Milky Way will collide with its close neighbor the Andromeda Galaxy. in about 4 billion years, the Milky Way will collide with its close neighbor, the Andromeda Galaxy.

你知道銀河系會和仙女座星系相撞嗎。 在大約40億年後，銀河系會和它的近鄰相撞仙女座星系。

Space travel:

Did you know that the top 3 participants paying more than $20 millionto flew to ISS. Between 2001 and 2009, a total of 7 millionaires flew to ISS aboard the Russian Soyuz, with the top 3 participants paying more than $20 million.

2001年～2009年期間，一共有7名富豪搭乘俄羅斯聯盟號飛船飛往ISS，前3名的參與者都支付了2000萬美元以上。

Other:

Did you know that astronauts have to do compulsory exercise?Astronauts must exercise two hours a day at least.

你知道太空人要強制運動嗎？太空人每天必須至少運動兩個小時以上。

天文常識：這裡有關於太陽系的10件事，你的老師有沒有告訴過你？. (2019, 10). https://kknews.cc/science/bmer38n.html

這幾件關於銀河系的事情，你可能不知道哦. (2018, 31). https://kknews.cc/science/vkbbzn2.html

太空旅行前應了解的事 (一). (2020, August 8). 草根影響力新視野. https://grinews.com/news/%e5%a4%aa%e7%a9%ba%e6%97%85%e8%a1%8c%e5%89%8d%e6%87%89%e4%ba%86%e8%a7%a3%e7%9a%84%e4%ba%8b-%e4%b8%80/

外太空生活教你的事情－《太空人的地球生活指南》. (2014, 19). PanSci 泛科學. https://pansci.asia/archives/67807