Space Knowledge: Then and Now

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As you know, a lot has been discovered about space in a very short period of time. Scientists are always finding new information and proving themselves and other people wrong and right. We usually don't hear what people thought about space in the 20th century, which is why you probably do not know what people's knowledge of space was back then.


In the 19th and 20th century, people's space knowledge was very limited. They didn't know about things like black holes - an object in space which is where the gravity pulls so much no light can get out - which was first discovered by Karl Schwarzchild in 1916. If you are interested in finding out more about black holes, I highly recommend you use this link: In the early 20th century, people didn't really know about the moon's surface since no-one had been there and seen what it was like and they didn't really get a good idea by looking at satellites, which had been sent there by the Soviet Union and the USA.


Currently, our understanding of space is incredible. We know about all the planets in our solar system and we have even found out that one used to have water on and might still have water on. This planet is obviously Mars. I also remember watching a youtube video ( talking about top 10 Earth-like planets. Humanity are thinking about going to some of these planets when Earth gets too hot and unhabitable. The number 1 on the list was Mars, showing that we will almost definitely live there in the very near future, probabably in our lifetime since it is very similar and close to Earth. Although this decision is not liked by many people, Pluto is now considered a dwarf planet whereas it used to be a planet and lots of American students were taught this acronym to remember the planets " My very excellent mother just served us nine pizzas ". Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.

What do you think is the right knowledge?

Write a comment on what you think.


Comments (5)

  • tom Tom @ the BNC
    30 Oct 2019

    Hi succinct_leaves, this is a very interesting piece - could you add as a comment to an existing post? There's some posts already on the Hub talking about discoveries and how knowledge can benefit our future on Earth. I think this would be a very valuable contribution to get discussions going on those.

    Reply to this comment
  • Braiswick Primary School succinct_leaves | Braiswick Primary School
    30 Oct 2019

    Sorry, I didn't see any posts about this topic. In the future, I will comment more.

    Reply to this comment
  • Braiswick Primary School succinct_leaves | Braiswick Primary School
    30 Oct 2019

    Please can you write a link on a post similar to mine so I can comment my ideas.

    Reply to this comment
    1. tom Tom @ the BNC
      succinct_leaves's comment 31 Oct 2019

      Hi succinct_leaves, you can choose one! Take a look at the existing posts - specifically those about discoveries.

      Reply to this comment
  • Birchwood-logo-250x250.jpg entertaining_strawberry | Birchwood C of E Primary School
    06 Nov 2019

    This post has made me think about whether mars habitation is possible. As you said, Earth might get to hot, so here are both are reasons for both sides of the argument
    Mars has an atmosphere very different to Earth. Earth has an atmosphere that consists of 21% oxegon, where mars has 0.174% oxegon. There’s a big difference. This is a reason why we shouldn’t go to mars. However, humans cannot live on pure oxegon, it would be toxic and unhealthy. To support my opinion, we do need the oxegon mixed with nitrogen to survive, so unless we wear space suits, we wouldn’t be able to live on mars.

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