by Ron Kurtus
You can read them to further your understanding of the subject.
|General||Math needed for astrophysics studies||Pakistan|
|General||I don't understand Astronomy at all||Canada|
|Moon||Correcting number of Jupiter's moons||USA|
|General||Wants scholarship in Physics||USA|
|Black Holes||Can a graviton escape from a black hole?||India|
|The Earth||Galaxy versus Galactic motion||USA|
|General Topics||Why are orbits elliptical?||Nigeria|
|The Earth||Distinctive features unique to earth.||USA|
|Our Solar System||What are companions of planets called?||USA|
Math needed for astrophysics studies
November 28, 2017
hello dear sir,
I want to ask how much mathematics should i learn to understand astrophysics.
jawad - Pakistan
You need Calculus and Differential Equations. Both require a strong background in Algebra and Trigonometry.
Best wishes on becoming an Astrophysicist.
I don't understand Astronomy at all
February 14, 2017
I don't understand Astronomy at all. I don't enjoy studying about a whole new world that I've never visited. Is their an easy way to understand Triangulation, Radio telescopes?
Jawerriya - Canada
It can be interesting to look into the night sky and see all the numerous stars in the sky, as well as their movement throughout the year. Some people like to learn the constellations and arrangement of the stars.
However, Astronomy can delve deeper to find out what the planets and stars are made of. It is a scientific study that some people are interested in and others are not.
Triangulation is a method to determine distance using trigonometry. In Astronomy, it is useful to approximate distance of far-off objects.
A radio telescope uses radio waves instead of light ways to detect distant objects in space. In some situations, it works better than visible light.
Although teachers can often learning many facts without making the subject interesting, it is good to find things about the subject you like.
Best wishes for success in your studies.
Correcting number of Jupiter's moons
January 24, 2017
On your article about the Earth's Moon, you said the Earth has one Moon and Jupiter has 9 moons. This is incorrect, NASA has recently discovered that Jupiter has 67 moons! I believe the number is up to 67 now. Up until a few years ago, they knew it had at least 63 moons. Galileo discovered 4 of them in the early 1600s. I can only see 5 of them with my modern day, powerful telescope.
David - USA
Wants scholarship in Physics
December 19, 2016
how I get free scholarship by physics?
Minale - USA
Most high schools have lists of scholarships available. Your physics or astronomy teacher should also be able to provide help in getting a scholarship.
Some websites to check include:
Scholarships for Physics Majors
Various colleges also have information on getting a scholarships.
Best wishes for your success in getting an education.
Can a graviton escape from a black hole?
Topic: Black Holes
May 19, 2016
Does graviton escape from the black holes? If no then why other celestial objects feels their gravity, if yes then how can graviton escape from the place from where even light cant escape?
Vinamra - India
A graviton is a hypothetical particle that is responsible for gravitational forces, as part of the quantum theory of gravitation. Since it is supposed to be the source of gravitational forces through an exchange between masses, it really would not be moving freely like in escaping from a Black Hole.
Other celestial object do feel the gravitational forces from a Black Hole, as witnessed by objects being drawn into the hole. But its forces are reduced as the square of the distance from the Black Hole.
Galaxy versus Galactic motion
Topic: The Earth
May 1, 2016
What is the difference between Galaxy and Galactic motion?
A galaxy is a system of stars and other materials that are bound together by gravitational forces. The Milky Way is an example of a galaxy.
Galaxies tend to rotate very slowly about some center area. They also move in space as compared to other galaxies.
Why are orbits elliptical?
Topic: General Topics
February 27, 2016
How does the obit the elliptic
Akin - Nigeria
The orbit of a planet around the Sun should be a circle, however there are gravitational forces from the other planets that distort the orbit into an elliptical shape.
December 24, 2015
THE SUN MOVES ROUND THE EARTH
What is the Earth’s gravitational force?
Scientists Newton formula is Wrong
The sun is flat!
Moon is not Earth’s satellite
SUN IS NOT A PLANET
NOTE: The arguments have been deleted because they are too extensive to be published.
ROBIUL ISLAM - Bangladesh
No, the Sun does not move around the Earth. that has been proven many times.
The Earth’s gravitational force is approximately 9.8 m/s^2 times the mass of the object.
Newton's Third Law is correct. A force requires an opposite force.
The Sun is not flat. Your sources are inaccurate.
The Moon is Earth’s satellite. This is by definition.
It is true that our Sun is not a planet. It is a sun.
The starts do not move around the Sun. Your sources of information are incorrect.
Distinctive features unique to earth.
Topic: The Earth
September 27, 2015
What are 2 distinctive features unique to earth.
Plz get back to me soon.
Sarah - USA
Features of the Earth that are unique with respect to the other planets in our Solar System include an atmosphere and temperatures that can support life (as well know it) and oceans consisting of water.
Some of the other planets have atmospheres of other gases and temperatures either too high or too low to support life. Some have oceans but not made up of water.
What are companions of planets called?
Topic: Our Solar System
June 10, 2015
The companions of planets are called
Companions of planets are called "moons" or "natural satellites".
Hopefully, this reader feedback has helped provide information about Astronomy issues.
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