Velocity - curious about astronomy?

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Arjun Kertzmann asked a question: Velocity - curious about astronomy?
Asked By: Arjun Kertzmann
Date created: Sun, Apr 25, 2021 4:25 AM
Date updated: Fri, Jan 21, 2022 5:52 AM

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♻️ Escape velocity - curious about astronomy?

Could you escape from a black hole if you were able to go faster than the speed of light? (Intermediate) What is the size of a black hole? (Intermediate) When unmanned spacecraft accelerate in space, what causes them to slow down? (Intermediate) Will the Pioneer and Voyager probes ever leave the Milky Way? (Beginner)

♻️ ``curious about astronomy?

The sun's face is many times larger than the Earth's. The light from the sun reaches us as parallel beams. When it's a bit cloudy with gaps between the clouds the beams seem to come from a light source (the sun) just up in the atmosphere and the beams are spread out at angles as if the light source is just a short distance up.

♻️ Astronomy links - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. We answer your astronomy questions. Please browse our archive first.

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We answer your astronomy questions. Please browse our archive first. About Us ; For Teachers ; Most Popular ... Surface Speed Wormholes Escape Velocity H-R Diagram Pulsars Galaxy Clusters Sumerians Hubble Space Telescope Gamma Rays Spectral Types Rotation Curves Life Neutrinos Inflation Eclipses Weightlessness Careers Big Bang Spectrum. Curious Minds Online . We have 1793 guests and no members online. How Many Were Here? Total page views since 1997 118632384. Who are We? Ask an Astronomer is ...

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. Most of us are graduate students at Cornell, and all of us do this voluntarily, in our own time, fitting it in around our other work. Please take the time to browse our site and first try to use the resources online to find an answer to your question.

Space and time near a massive object are "curved," but we are unable to perceive this directly since we are limited to seeing things in three dimensions. Our brains therefore assume that space is flat, and in the process of making this assumption, things get screwed up. Objects which are actually moving along straight lines appear, in the "map" we construct inside our heads, to be traveling along curves and to be pulled by the massive object nearby.

The teacher didn't give more details, but I'm curious of how can it be done. What properties of the masers allow for such a measurement and why the same can't be done with stars or gas clouds? observational-astronomy galaxy radial-velocity maser

We answer your astronomy questions. Please browse our archive first. About Us ; For Teachers ; Most Popular ... String Theory Active Galactic Nuclei Sunrise Spiral Galaxies Declination Trans-Neptunian Objects Blueshifts Interferences Velocity. Curious Minds Online . We have 2524 guests and no members online. How Many Were Here? Total page views since 1997 118863573. Who are We? Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. Most of us are graduate ...

We answer your astronomy questions. Please browse our archive first. About Us ; For Teachers ; Most Popular ... Distance Unanswered Kepler's Laws Magellanic Clouds Stellar Evolution Neptune Redshift Momentum Motions Interior Atmosphere Velocity Orientation Time Dilation Radio Telescopes Absorption. Curious Minds Online . We have 1811 guests and no members online. How Many Were Here? Total page views since 1997 118086219. Who are We? Ask an Astronomer is run by volunteers in the Astronomy ...

We answer your astronomy questions. Please browse our archive first. About Us ; For Teachers ... Escape Velocity Dwarf Galaxies Flux Oscillation Quantum Entanglement Astronauts Seasons Experiments Sound Mars Mass Elements Beginning Illusion Mayan White Dwarfs The Universe names Units Revolution. Curious Minds Online . We have 2310 guests and no members online . How Many Were Here? Total page views since 1997 118960674. Who are We? Ask an Astronomer is run by volunteers in the Astronomy ...

Curious About Astronomy? Search. Latest Question. How much does the Earth "wobble" on its orbit due to the Moon's gravity? (Intermediate) Some exoplanets are found by measuring how their star wobble. I was wondering how much the Earth wobbles in orbit due to the Moon's gravity, how far it actually would move. The Earth does wobble on its orbit due to the Moon's gravity. Below is a representation of Earth's trajectory around the Sun where the wobble has been amplified thousandfold. Both the ...

The formula for the velocity of an object at some distance r from the Sun is: v = sqrt [GM* (2/r - 1/a)] Where G is the universal gravitational constant, M is the mass of the Sun, and a is the planet's semimajor axis. At perihelion, Earth's distance from the Sun is r=a (1-e) and at aphelion, it's r=a (1+e).

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We've handpicked 23 related questions for you, similar to «Velocity - curious about astronomy?» so you can surely find the answer!

Stars - curious about astronomy?

This stellar swarm is M80 (NGC 6093), one of the densest of the 147 known globular star clusters in the Milky Way galaxy. Located about 28,000 light-years from Earth, M80 contains hundreds of thousands of stars, all held together by their mutual gravitational attraction. Globular clusters are particularly useful for studying stellar evolution ...

Telescopes - curious about astronomy?

Astronomy in the Arts Tag Cloud Astrology Time Travel Motions Scintillation Magnetic Pole Reversal Uranus Singularities The Sun Mechanics Density Wave Event Horizon Gravitons Speed of Light Orientation Measurements Libration Mass Matter Reflection Telescopes

Time - curious about astronomy?

I was curious at 5 yrs old when i read my first astronomy book. I was hooked. After all, we are made of that same Universe and would not exist without it.

Timekeeping - curious about astronomy?

Does the Moon rotate as it goes around the Earth? I thought it didn't because it always keeps one face toward Earth! The Moon definitely has to rotate to keep one face toward the Earth. If the Moon didn't rotate, we could see all parts of it as it revolved through its orbit.

Wimps - curious about astronomy?

Page 4 of 4 - No WIMPS! - posted in Science! Astronomy & Space Exploration, and Others: Ive been interviewed for years by reporters (print and TV) about subjects related to my field of expertise (not physics or astrophysics I regret to say), and since my field includes an understanding of how popular media work, I am always very careful.

Careers in astronomy - curious about astronomy?

Careers in Astronomy - Curious About Astronomy? Ask an ... Education Details: Jan 17, 2015 · Astronomers and Telescope Operators in the VLTI control room.Astronomers spend most of their time working with computers. When many people picture an astronomer at work, they think of someone huddling in a cold, dark observatory, squinting through a telescope.

Accretion disks - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. Most of us are graduate students at Cornell, and all of us do this voluntarily, in our own time, fitting it in around our other work.

Black holes - curious about astronomy?

The inner disks of supermassive black holes reach thousands of degrees Kelvin (similar to the temperatures at the surface of a hot star), while smaller black holes can heat their disks to millions of degrees, where they emit in the x-ray part of the spectrum. Black holes, therefore, are some of the brightest objects around.

Cepheid variables - curious about astronomy?

Cepheid Variables. Enter Part of Title. Display # 5 10 15 20 25 30 50 100 All. 20. How can we measure distances to more stars? (Intermediate) How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda? (Advanced) How fast is the Universe expanding?

Copyright notice - curious about astronomy?

You are free to reproduce any material on this site for educational or other noncommercial purposes as long as you give us proper credit (by referring to "Curious …

Coriolis effect - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. Most of us are graduate students at Cornell, and all of us do this voluntarily, in our own time, fitting it in around our other work. Please take the time to browse our site and first try to use the resources online to find an answer to your question.

Density wave - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. We answer your astronomy questions. Please browse our archive first.

For teachers - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. Most of us are graduate students at Cornell, and all of us do this voluntarily, in our own time, fitting it in around our other work.

General physics - curious about astronomy?

Physics is amazing. But driven by the first-sight love you may have for astronomy, it’s easy to forget about physics and imagine you can study astronomy without physics. The truth is that the pop-science books mentioned above won’t make you professional astrophysicists. For that, you first have to study a lot of physics and mathematics.

General questions - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. We answer your astronomy questions. Please browse our archive first.

Hawking radiation - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. We answer your astronomy questions. Please browse our archive first.

Legal information - curious about astronomy?

If you are interested in reproducing material on this site for commercial purposes or if you have any other questions about this copyright notice, please contact us at: curious[at]astro[dot]cornell[dot]edu. Disclaimer. The Ask an Astronomer website is designed and run primarily by graduate students at Cornell University, purely on a volunteer basis. Though we try to be as accurate and complete as possible with each answer, we cannot guarantee that all of them are correct.

Most recent - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. Most of us are graduate students at Cornell, and all of us do this voluntarily, in our own time, fitting it in around our other work. Please take the time to browse our site and first try to use the resources online to find an answer to your question.

Radioactive decay - curious about astronomy?

Radioactive Decay. How do we know the age of the Universe and the Earth? (Intermediate) How does melting a material reset its radioactive clock? (Intermediate) Why is Earth's core molten? (Intermediate)

Solar system - curious about astronomy?

Our Solar System. The Sun. General Questions. When the Sun converts mass to energy, do the orbits of the planets change? (Advanced) How long does it take for the …

The sun - curious about astronomy?

Ask an Astronomer is run by volunteers in the Astronomy Department at Cornell University. We answer your astronomy questions. Please browse our archive first.

Tidal friction - curious about astronomy?

Is Earth-moon tidal friction causing global warming? (Intermediate) Is the distance from the Earth to the Sun changing? (Advanced) Is the Moon moving away from the Earth? When was this discovered? (Intermediate) The Moon slows the Earth's rotation, but how fast was it spinning billions of years ago? (Intermediate)

X-rays - curious about astronomy?

X-ray astronomy is a relatively new scientific field focusing on celestial objects that emit X rays. Such objects include stars, galaxies, quasars, pulsars, and black holes. Earth 's atmosphere filters out most X rays. This is fortunate for humans and other life on Earth since a large dose of X rays would be deadly.