what is the fastest rocket

Question: what is the fastest rocket
- Keywords:
  fastest,
  rocket
Asked by jeffy sml to Stephen, Stephanie, Rehemat, Christopher, Caroline, Aileen on 6 Mar 2018.
- Christopher Nankervis answered on 6 Mar 2018:
  
  I don’t know the answer to this. There are some very fast ones in space, certainly faster than 30’000 miles per hour!
- Rehemat Bhatia answered on 6 Mar 2018:
  
  I’m really sorry, I don’t know the answer to this! 🙁
  I do know that if a rocket wants to get from the Earth to space, it has to travel at 20 times the speed of sound (7.9 km per second).
- Aileen Baird answered on 6 Mar 2018:
  
  Sorry, I don’t have any answers for this one either! Perhaps you need to speak to an an astro-physicist or an aerospace engineer (or both!)
- Stephanie Mann answered on 7 Mar 2018:
  
  There are 2 interesting answers to this questions: the fastest EVER man made object is a space craft called the Helios II which was made by Germany in the 1970’s. This spacecraft was designed to orbit the sun and because of it’s very long and tin orbit, it got to super fast speeds near the sun (that was to allow it to take very good pictures close by but not hang around too long!). This spacecraft got to speeds of over 150 THOUSAND miles per hour!!
  
  Another really interesting space craft is the Voyager 1. This ship isn’t quite as fast but it’s the furthest we have ever sent something into space. It has been journeying out to the outer solar system (way past Pluto) for over 40 years, and is currently travelling at 38 thousand miles per hour and is a staggering 13 billion miles away from the sun (and even further from earth depending on the season)!
- Stephen Twomlow answered on 7 Mar 2018:
  
  Sorry I am an agricultural scientist, not a rocket scientist – but we may need to rockets to find a new home in the future if we do not learn to manage climate change

Question: what is the fastest rocket

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