Questions tagged [escape-velocity]
Questions about the speed at which an object can go to a point at infinity while ending at rest.
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Ejected galaxies, dynamical friction and dark energy?
I have a question after reading this paper (https://arxiv.org/abs/1411.5860).
There the authors analyse the ejection of galaxies from their local groups in the presence of dark energy.
I had some ...
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Does the escape velocity formula take into account how a gravitationally bound object's distance to its primary increases before coming back down?
Confusing title, I know. Imagine a perfect, homogenous sphere with an exact radius of $1,000 \text{km}$ and an exact mass of $8 \times 10^{15} \text{kg} $.
If you use the formula for escape velocity $...
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Could You Escape an Event Horizon by increasing a Black Hole's velocity?
I have an idea for trying to escape the black hole's event horizon that might make basically no sense and I want it double checked. Basically, I do know that you can't escape the event horizon unless ...
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Space travel relative to solar system's movement through space
Assuming our entire system (stars, planets, etc) is moving through space at around 180,000 mph. Why can't we leave in a direction opposite our system's movement to achieve deepspace flight?
Part two
...
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Escape velocity of leaving the solar system vertically and horizontally [duplicate]
Is there a difference in the escape velocity when leaving the solar system?
a) Vertically (out of planetary plane, in a perpendicular direction to it)
b) Horizontally (in the planetary plane)
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escape velocity of leaving the Milky Way galaxy vertically and horizontally
Is there a difference in the escape velocity when leaving the Milky Way galaxy
vertically (out of galactic plane)
horizontally (in the galactic plane)?
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escape velocity of the Milky Way galaxy [duplicate]
I have heard of the escape velocity of Earth to be 11 km/s.
Is there an escape velocity of the Milky Way galaxy? If yes, what number is it and how can it be computed? Is there a difference in leaving ...
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What is the maximum speed in which a human jumping away from Deimos and towards Mars would actually fall back down rather than enter Mars' gravity?
Imagine a universe in which Deimos and a human are the only objects in the universe. It doesn't matter if the human jumped even 1 nanometer per second slower than escape velocity, they would still ...
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Can an object from a natural process escape earth gravitation?
I'm no expert, but I once studied basic from advanced physics and understand
gravity
action/reaction
escape velocity of 11.2 km/s from the earth surface
escape velocity changing as the object go far ...
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Can Stellar Spaghetti ever escape?
Spaghettification is the deformation of a body into long, thin strips due to tidal forces as the body passes through a powerful gravitational field. Image from wikipedia:
Stellar spaghetti has been ...
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What escape velocity would quark stars have?
Quark stars are hypothetical compact stars that are denser than neutron stars and maybe the last stage of upholding matter before stars that collapse into a singularity. Neutron stars have escape ...
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Can a habitable planet be smaller than 0.58 Earth radii?
According to the below image, the lowest escape velocity a planet can have in order to still be able to retain water on its surface and have a temperature above freezing is 6.5 km/s minimum.
With ...
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What should the mass of a planet be in-order for its escape velocity to be near the speed of light? [duplicate]
What should the mass of a planet be in-order for its escape velocity to be the speed of light? Is it even possible? What will it look like from an outside viewer? Will it even be visible in the human ...
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Do Enceladus' geysers fall back to its surface or do they achieve escape velocity?
Enceladus, a moon of Saturn, has a very low surface gravity at 0.114 m/s² or 0.012 g. It has a subsurface ocean of liquid water and is ejecting plumes of it. Does the ejected water eventually fall/...
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Largest body in the solar system that a baseball thrown by a professional pitcher could escape
What is the largest (most massive) known body in the solar system that a professional pitcher could throw a baseball off of, i.e. that has an escape velocity lower than ~102 MPH? (45.33 m/s)
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