Questions tagged [speed]

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What is a safe speed in space for spacecraft?

Does traveling fast as possible shortening the duration of the mission lessen chances of collision or mechanical failure, or does traveling slower in space in some way safer?
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1answer
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Could Breakthrough Starshot proposed propulsion system be used in a regular size probe to accelerate it faster than any probe has been before?

Supposedly Breakthrough Starshot project wants to accelerate a capsule of the size of a mobile phone - according to one source - and of the size of the chip of a mobile phone - according to another ...
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Travel Speed in Space

I have read several questions and answers here concerning achieving speeds beyond the typical deep-space exploration missions. While speed increases near the Sun for example, that can't be applied to ...
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1answer
138 views

Constant Acceleration in Space. How much time for a given distance?

I have been researching a lot and can't make any sense of it all, so I am trying my luck here. I want to program a simple formula that gives me the travel time in space. I have a constant thrust of ...
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2answers
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Why is Voyager/Pioneer so slow compared to Parker Solar Probe?

Deep space probes should be the fastest ones, due to incredible distances they are supposed to travel. AFAIK, Parker Solar (PS) will reach more than 600 000 km/h, incredible. On the other hand, ...
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1answer
129 views

At what point when travelling faster and faster around the earth are you not gonna be falling back again (7km/s? 8km/s?)

My dad and I thought about a problem we had when discussing Earth's gravitational field. This wasnt the original question but I still would like to know the answer. So essentially my question is: ...
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1answer
275 views

How often do we get information from the Voyager spacecrafts?

Checking the JPL website for the Voyager spacecrafts (https://voyager.jpl.nasa.gov/mission/status/) I can see a distance input from the sun and earth. The description for the distance claims that "...
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2answers
139 views

Modern ICBMs vs new Russia Weapons [closed]

If a modern ICBM can travel at speeds of 6-7 km/s (around 25000 km/h) and the speed of sound is 1192 km/h that's by my math Mach 21. So if a modern ICBM can travel at Mach 21, why are new hypersonic ...
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4answers
1k views

What is the fastest can we or have ever traveled in space?

What is the fastest vehicle currently in space? At what speed with our technology currently does physics restrict our speed limits in space?
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3answers
1k views

What is the fastest rover that has ever traveled on the surface of an extra-terrestrial body?

What is the fastest rover currently moving on the surface of another celestial body? At what speed with our technology currently does physics restrict our speed limits on the surfaces of solar system ...
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1answer
200 views

What is the speed that we can reach using tsar bomba as a propellant?

The idea of using an atomic bomb as a propellant was introduced in project orion, but it did not work out because of the interdiction of using the atomic bombs. So I decided to calculate the speed ...