Escape Velocity
Related Category: Astronomy: General
the velocity a body must be given in order to escape the gravitational hold of some other larger body, e.g., the earth, moon, or sun.
escape velocity
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Escape Velocity :
Escape velocity, in astronomy and space exploration, is the velocity that is sufficient for a body to escape from a gravitational centre of attraction without undergoing any further acceleration.
Escape Velocity
NASA's New Horizons spacecraft is the fastest ever launched, speeding away from Earth at an escape velocity of 36,000 miles per hour. Image Credit: NASA ...
Escape Velocity
If an object moves fast enough it can escape a massive object's gravity and not be drawn back toward the massive object. The critical speed needed to do this is the escape velocity.
escape velocity
the velocity an object or rocket needs to escape the gravitational clutch of a more massive object
evening star ...
ESCAPE VELOCITY - Velocity that an object needs to escape the gravitational well of a more massive object:
where, m = the object's mass, r = distance from object's center, and G = gravitational constant.
Escape Velocity
The velocity needed to escape from the surface of a body
Event Horizon ...
Escape Velocity
the speed required for an object to escape the gravitational pull of a planet or other body.
Event Horizon
the invisible boundary around a black hole past which nothing can escape the gravitational pull - not even light.
Escape Velocity: Nova
The over arching name of the overcrowded empire of Aurora in the Galactic South of the game, EV: Nova.
escape velocity: The initial velocity an object needs to escape from the surface of a celestial body.
evening star: Any planet visible in the sky just after sunset.
Escape velocity. The minimum speed that an object must attain to escape from the surface of the planet or other body without being given any extra impetus. The escape velocity of Earth is 11.2 kilometres per second.
Escape Velocity - The speed that an object must have to achieve a parabolic trajectory and escape from its parent body
Event Horizon - The boundary of a black hole. No matter or radiation can escape from within the event horizon ...
Escape Velocity
(a) Speed an object must attain in order to free itself from returning to the parent body under the effects of gravity. [A84] ...
Escape velocity- speed a body needs to travel in order to escape the surface gravity of a star or planet
Event- a point in space-time, specified by its time and place ...
Escape Velocity - How fast must something go (velocity) in order to escape from an object (not fall back down on it). This is used for things like planets, stars, etc., where you need to get your spaceship going a certain speed to "escape".
escape velocity, Vesc2 = 2GM/R
for Vesc = c, we get Rs = 2GM/c2
Rs= Schwarzchild radius = event horizon = 3M/Msun
M > 3Msun collapse unstoppable --- singularity ...
escape velocity The speed necessary for an object to escape the gravitational pull of an object. Anything that moves away from the object with more than the escape velocity will never return.
Escape Velocity
The minimum velocity required for an object to escape the gravity of a massive object.
European Space Agency (ESA) ...
Escape velocity
In physics, escape velocity is the speed where the kinetic energy of an object is equal to the magnitude of its gravitational potential energy, as calculated by the equation,...
exceeds the speed of light
Speed of light ...
Escape velocity
Delta-v budget
Hohmann transfer orbit
Bi-elliptic transfer ...
Escape velocity
The speed an object must have in order to escape from another objects gravity.
Exosphere ...
ESCAPE VELOCITY
The escape velocity is how fast an object has to be moving away from a planetary object in order to escape its gravitational field.
21 Escape velocity from Earth.
22 Concept of frame of reference: constant motion makes no difference.
22a. The aberration of starlight, comet tails etc.
22b Elementary notions about aerodynamics.
Esc vel Escape velocity in kilometers per second M.O.V. Mean Orbital Velocity in kilometers per second Axial incl Inclination of the rotation axis in degrees (obliquity) Oblate Oblateness Ascend Longitude of the ascending node Perihelion Longitude of ...
Failed to reach escape velocity.
Pioneer 3 - USA Lunar Flyby - (December 6, 1958)
Failed to reach escape velocity.
Surface gravity: 274 m . s-2 Escape velocity at surface: 618 km . s-1 Radiation emitted: 3.86 X 1026 W Equatorial rotation period: 26 days
Mass loss rate: 109 kg . s-1
Click here to see some recent solar events.
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137. Escape Velocity
The velocity needed to escape from the surface of a body.
Escape Speed (Escape Velocity) It is the speed at which an object on the surface of a body must be propelled in order not to return to that body under the influence of their mutual gravitational attraction.
Because of its low escape velocity, Mercury hasn't much of an atmosphere. Based on information from Mariner 10, its surface pressure is ten billionths of a millibar.
escape (NASA Thesaurus / NASA SP-7, 1965) Of a particle or larger body: to achieve an escape velocity and a flightpath outward from a primary body so as neither to fall back to the body nor to orbit it.
Mercury's low escape velocity and high surface temperatures do not permit it to retain a significant atmosphere.
He pointed out that there could be massive stars whose gravity is so great that not even light could escape from their surface (see escape velocity).
In other words, the escape velocity for an object within the event horizon exceeds the speed of light. The name arises since it is impossible to observe any event taking place inside it - it is a horizon beyond which we cannot see.
At the "surface" of such a beast (called the "event horizon"), the escape velocity (that required to leave and not come back) equals the speed of light, and the body disappears from view. It's there, as is its gravity; you just can't see it.
Currently, the most popular theory holds that the monster that powers active galactic nuclei is a supermassive black hole, a region of high density within which the escape velocity exceeds the speed of light.
Because of gravitational attraction, the escape velocity at the surface of a star, say, will be higher if the star is smaller in size or heavier. On the other hand, Einstein discovered that the maximum velocity of any object is the speed of light.
At that time, the Newtonian theory of gravity and the concept of escape velocity were well known.
In my study of Black Holes I have been taught that nothing can escape the gravity well of this object because the escape velocity is = c. However, Science magazine, vol. 270, dated 10 Nov.
8 (a) A spacecraft (arrow) leaving a planet (blue ball) with a speed greater than the escape velocity leaves on an unbound trajectory (top). The graph (bottom) shows the distance between the ship and the planet as a function of time.
The escape velocity of Mars is 18,000 kilometers per hour (11,000 miles per hour), a good deal slower than the escape velocity of Earth, because gravity on Mars is weaker (see table).
Within the Schwarzschild radius, the escape velocity from the black hole is greater than the speed of light. The size of the Schwarzschild radius may be proportional to the mass of the black hole.
This is a sphere around the black hole where the escape velocity is the speed of light.
The spacecraft passed on by Jupiter since Voyager's velocity was greater than Jupiter's escape velocity, and of course it slowed down again relative to Jupiter as it climbed out of the huge gravitational field.
The first human spaceflight to reach escape velocity, orbiting the moon ten times, making photographic observations and returning to earth after 6-day mission.
(16-17)
Jan. 14, 1969
Jan. 15, 1969 ...
A black hole is an object which has such a strong gravitational field that its escape velocity is greater than the speed of light.
The Star of Bethlehem
Many people have attempted to give an astronomical explanation for the star of Bethlehem.
At the event horizon, the escape velocity equals the speed of light, c. Black holes are therefore hard to observe because they do not emit light at any waveband.
Given HE 0437-5439's breakaway speed, it must have been flung out 100 million years ago to have reached its current distance, and it is just going to keep on going - it's velocity is twice the escape velocity of the Galaxy.
"The escape velocity from the surface of the planet is estimated to be slightly more than twice that of Earth, so that the planet may well have retained a substantial atmosphere and may thus have a larger radius ...
Any future rocket bases on Mars will be more efficient than those of Earth due to the fact that the escape velocity from Mars is only about 5km (3 1/8 miles) per second.
As a result, by knowing that all of the galaxies have velocities of less than the escape velocity, the total mass can be estimated.
Type 2 objects have essentially the same line widths for all the emission lines. The broad-line region (BLR) virtually requires a massive central object, since the velocities are much higher than any normal galaxy escape velocity.
 See also: Velocity, Orbit, Earth, Mass, Gravity
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