402 Answered Questions for the topic astronomy
Astronomy
02/10/20
An astronaut weighs 198 pounds in his spacesuit when weighed on Earth. What would this astronaut weigh on a planet whose mass is 3.8 Earth masses and whose radius is 1.3 Earth radii?
Need to find the weight of this astronuat in pounds.
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Astronomy
02/09/20
You have discovered the planet Zoltron. It is 16.0 times farther from the Sun than Earth (16.0 AU). How long does it take this planet to go once around the Sun?
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why can't we attach messages to moving stars that will eventually leave the system
Recently a high velocity star was discovered in Australia. I read a National Geographic article that said it would reach another galaxy in 100 million years and that led me to wonder, what if we...
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Astronomy
12/16/19
Surface of the sun
At what altitude from the surface of the sun does space begin?
12/04/19
White Holes mistaken for Quasars??
Could a quasar be a white hole? If a black hole pulls in everything including light, while breaking down time as you speed up through the accretion disk till you reach the event horizon, could a...
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Astronomy Physics
11/18/19
In a paragraph, explain the life cycle of (i) a white dwarf, (ii) a neutron star, and (iii) ablack hole. You should cover every stage.
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Astronomy
11/11/19
Astronomy Help With Question
What is the final "ash" at the core of a high-mass star, which cannot fuse into anything heavier?
Astronomy
10/29/19
A star produces a continuous spectrum from its what?
Precise terminology, related to Astronomy, stars, spectrums
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10/20/19
How far apart are the telescopes?
If astronomers use an interferometer observing the wavelength of 1000 nm to measure the angular diameter of a planet like Jupiter orbiting a star 10 light-years from Earth, How far apart are the...
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10/02/19
Calculate redshift of a Galaxy using recession velocity and distance
A galaxy is receding away from us with a recession velocity of 100,000 km s^−1. What is the distance to this galaxy? (Don't input the distance, just calculate it.) What is the redshift z of this...
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09/21/19
Flux of sunlight on Earth
The luminosity of the Sun is 4∗10^33 erg s^−1, and its distance to the Earth is 1.5∗10^13 cm.What is the flux of sunlight on the Earth, in units of erg s^−1 s^−1 cm^−2?
09/18/19
Is it possible for two black holes to collide perfectly?
If two blackholes with exactly the same mass, are traversing the universe on a perfect collision course with no other gravitational force effecting either black hole, what would happen to both...
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Astronomy Astrophysics
09/18/19
What happens to a star when its binary star goes supernova?
Taking into account two binary stars, if relatively close, what would happen when one star goes supernova before the other? Does that binary simply rip apart?
09/18/19
How large does a star need to be for its supernova to produce element 115
How large does a star need to be for its supernova or hypernova / collapsar to produce super heavy elements like 115?Also, how abundant are these stars in the universe?
Astronomy
09/18/19
distance from the sun in 47 years
what would be the average distance from the sun in astronomical units of a comet with a period of 47 years?
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Astronomy
09/13/19
A half circle , stretching from horizon to horizon, would comprise _______________ degrees
A)360b)75c)220d)180
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Astronomy Trigonometry
09/08/19
Asronomy/Trig struggles..
How do I solve? Step by stepWhen Jupiter is at a distance of 630 million kilometers from Earth (4.2 astronomical units), it has an apparent angular diameter of 46 arcseconds (46/3600 of a degree)....
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Astronomy
09/07/19
Astronomy Question
Let's say we find a star that is located on the points or circles in the sky listed in the answer choices below. Then, on the same night, we move to a location on Earth that is some significant...
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If Scoobie could drive a Jetson's flying car at a constant speed of 340.0 km/hr across oceans and space, approximately how long would Scoobie take to drive around Earth's equator in days?
If Scoobie could drive a Jetson's flying car at a constant speed of 340.0 km/hr across oceans and space, approximately how long would Scoobie take to drive around Earth's equator in days? Use 6200...
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If Sally could drive a Jetson's flying car at a constant speed of 160.0 km/hr across oceans and space, approximately how long (in years) would she take to drive to a solar system object 10.2 AU away?
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Suppose the width of your fist is 5.9 inches and the length of your arm is 26.9 inches. Based on these measurements, what will be the angular width (in degrees) of your fist held at arm’s length?
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Approximately how long will it take light to travel to 1.7 AU in minutes? Use 3 × 108 m/s for the speed of light.
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