![]() However, Edwin Hubble discovered the expansion of the universe is not being slowed down but in fact expanding.Įdwin’s discovery shook the very foundations of science and what we thought we knew about the universe. The expansion of the universe was thought of to be slowed down by gravity. It’s interesting how we stumbled onto it. The concept of dark matter and dark energy is at the frontier of our understanding of the universe. To get some appreciation of this story we need to give you a little context. The shuttle program vision was to get cheaper over time, but that never happened, which led to the cancellation of the space shuttle in 2011. It meant that the cost of one rocket would be nearly $450 million. ![]() In the past, the space shuttle would cost about $8,000 per pound. If I want to send a satellite or a new supply for the astronauts on the ISS the cost of the rocket will depend on how efficient it is. When calculating the cost of a rocket one crucial part is the dollar per pound. Why is that a big deal? Well, it comes down to the math of it all (don’t roll your eyes just yet). It’s quite unbelievable that he was able to reuse a rocket and launch this satellite to space without a hitch. ![]() If you don’t know already, SpaceX is a private space company led by the infamous Elon Musk that not only wants to help NASA deliver cargo to the ISS but get humans to Mars.Įlon wanted to reuse rockets and made it his dream to make it happen. SpaceX is making waves all throughout the year. I think having a birthday every 1.5 days would get boring pretty fast or on the flipside, you would be in a state of perpetual partying. You can’t tell from the video but the orbital periods (how long it’ll take to orbit the star – year) is anywhere from 1.5 days to 18 days. Now, another thing is how fast they orbit the star. Furthermore, what’s even more exciting is if you were a citizen of TRAPPIST-1b or TRAPPIST-1c (two closest planets to the star), that if you looked up at the sky, you would see the others planet like we see our Moon except for SEVERAL times bigger. In other words, Earth would be almost half an AU further out than all of these guys. The furthest planet in the TRAPPIST-1 solar system is as far out as Venus in our system. It’s measured in AU, which stands for astronomical unit, or the distance from our Sun to the Earth (149 million km). wp-content/uploads/2017/12/T1_1080_highQ_fast.mp4įirst, my initial attention went to how incredibly close these planets are orbiting to their parent star.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |