Articles related to "Escape Velocity"
Why There Is no Atmosphere on the Moon
Earth's Moon is a desolate airless world. Like other small moons and planets in the solar system it has no air. Why do these small worlds lack atmospheres?
moon • escape velocity • atmosphere escapes • earth moon • gravity
Earth's Moon is a desolate airless world. Like other small moons and planets in the solar system it has no air. Why do these small worlds lack atmospheres?
moon • escape velocity • atmosphere escapes • earth moon • gravity
Calculating Density of Black Holes
To form a black hole, matter must be compressed to such high densities that it is smaller than the event horizon or Schwarzschild radius.
black hole • event horizon • schwarzschild radius • density • energy density
To form a black hole, matter must be compressed to such high densities that it is smaller than the event horizon or Schwarzschild radius.
black hole • event horizon • schwarzschild radius • density • energy density
Understanding the Derivation of Escape Velocity
The minimum speed needed to escape from the gravitational field of a star, planet, or moon is the escape velocity. Escape velocity derives from conservation of energy.
escape velocity • conservation of energy • kinetic energy • potential energy • escape speed
The minimum speed needed to escape from the gravitational field of a star, planet, or moon is the escape velocity. Escape velocity derives from conservation of energy.
escape velocity • conservation of energy • kinetic energy • potential energy • escape speed
Black Holes, What are They?
Black holes are stars collapsed to the point that nothing, not even light can escape.
black hole • escape velocity • relativity • speed of light • schwarzschild radius
Black holes are stars collapsed to the point that nothing, not even light can escape.
black hole • escape velocity • relativity • speed of light • schwarzschild radius
It's Just Rocket Science - Part 1
In its simplest form, a rocket is just a flying container of fuel open on one end to give a controlled flight.
rockets • icbm • parabola • rocket fuselage • rocketry
In its simplest form, a rocket is just a flying container of fuel open on one end to give a controlled flight.
rockets • icbm • parabola • rocket fuselage • rocketry
Event Horizon and Photon Sphere
A static isolated black hole has an event horizon or Schwarzschild radius surrounded by a photon sphere.
black holes • schwarzschild radius • event horizon • photon sphere • static isolated black hole
A static isolated black hole has an event horizon or Schwarzschild radius surrounded by a photon sphere.
black holes • schwarzschild radius • event horizon • photon sphere • static isolated black hole
The Mathematics of Black Holes
How massive does an object have to be in order to be transformed into a black hole? There is a very simple way to find this out using a standard algebraic equation.
schwarzschild radius • black holes • albert einstein • general relativity • escape velocity
How massive does an object have to be in order to be transformed into a black hole? There is a very simple way to find this out using a standard algebraic equation.
schwarzschild radius • black holes • albert einstein • general relativity • escape velocity
Black Holes --- Our Silent Friends
black holes are defined; and some formation scenarios are discussed
black holes • astronomy • supernova
black holes are defined; and some formation scenarios are discussed
black holes • astronomy • supernova
Black Holes Space/Time Distortion
Like sharks in the ocean millions of Black Holes wander the universe. And like those creatures the universe needs these galactic wanders to maintain stability.
black hole • event horizon • stellar mass • photon sphere • super nova
Like sharks in the ocean millions of Black Holes wander the universe. And like those creatures the universe needs these galactic wanders to maintain stability.
black hole • event horizon • stellar mass • photon sphere • super nova
What is a Black Hole?
The phenomena known as black holes are some of the most studied elements of the universe, yet they still retain a fascinating amount of mystery.
what is a black hole • albert einstein • general relativity • john michell • schwarzschild radius
The phenomena known as black holes are some of the most studied elements of the universe, yet they still retain a fascinating amount of mystery.
what is a black hole • albert einstein • general relativity • john michell • schwarzschild radius
Ellen Wittlinger's Young Adult Novel Hard Love
Hard Love is a novel about trust: telling the truth, telling lies, naming and being named. But most importantly, it's about deciding when to escape and when not to.
hard love ellen wittlinger teen fiction young adul • hard love lambda literary award michael printz awa • hard love sexual orientation lesbian teen coming o • zines ani difranco names and dates bob franke hard • ellen wittlinger john gio marisol zine conference
Hard Love is a novel about trust: telling the truth, telling lies, naming and being named. But most importantly, it's about deciding when to escape and when not to.
hard love ellen wittlinger teen fiction young adul • hard love lambda literary award michael printz awa • hard love sexual orientation lesbian teen coming o • zines ani difranco names and dates bob franke hard • ellen wittlinger john gio marisol zine conference
Origin of the Idea of Black Holes
Michell first suggested the idea of black holes in 1783. Schwarzschild's exact solution to Einstein's general relativity equation led to the prediction of black holes.
black holes • corps obscura • schwarzschild's solution to einstein's equations • general relativity • laplace
Michell first suggested the idea of black holes in 1783. Schwarzschild's exact solution to Einstein's general relativity equation led to the prediction of black holes.
black holes • corps obscura • schwarzschild's solution to einstein's equations • general relativity • laplace
Shareware games for vintage macs
Will explains his absence, and recommends some quality shareware.
mac shareware • mac games • shareware • mac
Will explains his absence, and recommends some quality shareware.
mac shareware • mac games • shareware • mac
Jupiter Optimus Maximus
Jupiter Optimus Maximus was the son of Saturn and became the leader of the Roman gods--this is Jupiter's story.
jupiter • roman gods • mythology • roman mythology • plants
Jupiter Optimus Maximus was the son of Saturn and became the leader of the Roman gods--this is Jupiter's story.
jupiter • roman gods • mythology • roman mythology • plants
Observing Virgo
Virgo the Virgin is rich in galaxies and holds one of the brightest stars in the night sky.
virgo • constellation • zodiac • virgin • maiden
Virgo the Virgin is rich in galaxies and holds one of the brightest stars in the night sky.
virgo • constellation • zodiac • virgin • maiden
X-Ray Flickering in Cygnus X-1
Identifying the star HDE226868 as the optical counterpart to the astronomical X-ray source, Cygnus X-1, was the first step in identifying it as a black hole.
cygnus x-1 • x-ray astronomy • hde226868 • astronomical x-rays • black hole
Identifying the star HDE226868 as the optical counterpart to the astronomical X-ray source, Cygnus X-1, was the first step in identifying it as a black hole.
cygnus x-1 • x-ray astronomy • hde226868 • astronomical x-rays • black hole
At This Speed........
An excerpt from Sports Illustrated relating how some race drivers approach speed.
sports • sports • winston cup racing • winston cup racing • auto racing
An excerpt from Sports Illustrated relating how some race drivers approach speed.
sports • sports • winston cup racing • winston cup racing • auto racing
Of Reactors and Regolith
For a manned mission to Mars, two needs must be addressed: available electrical power, and propellant for the trip home. Nuclear power and In-Situ Resource Utilization promise to address both.
mars • space • mission • nuclear • fuel
For a manned mission to Mars, two needs must be addressed: available electrical power, and propellant for the trip home. Nuclear power and In-Situ Resource Utilization promise to address both.
mars • space • mission • nuclear • fuel
Astronaut Nonfiction Books for Kids
From a boy's dream of the moon landing to the true story of 13 women who led the way for the first American female astronaut, these books will amaze fans of space travel.
space travel • space programs • nasa • astronauts • female astronaut
From a boy's dream of the moon landing to the true story of 13 women who led the way for the first American female astronaut, these books will amaze fans of space travel.
space travel • space programs • nasa • astronauts • female astronaut
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