Astrophysics Definition and 876 Threads

Hi everyone; I have a question, and I hope you could answer it. Well, I have a bachelor degree in physics/computer science and I plan to go to a graduate physics program; however, I don’t know which subfield is good for me. I was looking for computational astrophysics, computational condensed...

Hey Peeps, I am David, I am studying astrophysics and computer science at Florida Institute of Technology. I am going to be taking mainly ALLL physics and math classes from here on out so I plan to make myself know on here! Thanks!

I find it strange that astrophysics is not a pre-requisite to study cosmology in my university, students are only required to have taken general relativity. Is this a trend? How important would you say is astrophysics to learn cosmology?

Why does max tegmark's and brian greene's levels of multiverses consider as the highest level the mathematical multiverse hypothesis if other authors like David Lewis consider that there could be also universes non described by maths? Why does it stop at level iv (mathematical universes...

Hi, I'm a new member. I joined this forum because I'm interested with astrophysics and cosmology. I'm actually in the field of the Humanities, currently taking up my Master's in Art History. I like physics because I think it is where art and science beautifully intersect. I started to see the...

Hello everyone.. Myself Kaustov from NIT Trichy, pursuing BTech. in production technology. Very much interested to be a part of physics forum. I have knowledge on Theoretical Astrophysics and Cosmology and also Particle physics. Very much interested to be part of all the discussions and to help...

Hi! I'm doing a research project titled "Is it possible to colonise Mars?" I'm currently researching how to raise the temperature and pressure - and I've discovered to do this that re-directing asteroids towards Mars containing Ammonia would be vital. However, where do these asteroids that...

Hey guys, I'll have an interview for a PhD position on monday (they told me today) and need your advice. They want me to outline a sheme on how I'd create an experiment about sublimation on asteroids. The problem is, that I don't know anything about this topic. Do you have any ideas for me or...

i am currently student of Applied physics in final year. for my final year project i was offered space,electronics and materials(nanotechnology) research work. i chose space research work but my institute is unable t provide its courses so we have to chose from materials and electronics. i chose...

So, I have this scenario: A neutron star with radius R = 13 km Time for 1 rotation is 3,150807 ms, so frequency f about 317,379008 Herz Mass 1,97 times the Sun's which is then 1,97*(1,9884*10^30) kg Extra given information: the magnetic axis is aligned with its rotational axis (not that likely...

Hey guys, just after some advice on the perceived importance of finding a top notch college to attend post-graduate studies. They field I have a passion for is Astrophysics (yes crazy hard to get a job I know) and I was wondering if anyone has any advice on choosing graduate schools and how that...

Well, I am aiming for a scientific career now, and one area I would like to be involved in is astrophysics.So, is there enough opportunities there, especially in India? I know a lot is mystery like GUT,black holes,worm holes and so on.What I want to know is that can I really do something...

Note: I hope, I am not breaking any forum rules, If I do feel free to move my thread. Hi, I am a 3rd-grade physics student, my department has not many student and none of our profs interested in astrophysics. So there is nobody to show me the way and I think some of you might help me. I am...

Homework Statement According to the Big Bang model of cosmology, the universe has been expanding since some initial time (call it t = 0) when the temperature was infinite. At early times, the temperature T scales as t^1/2 . The current temperature is about 3K. Consider the part of space which...

Homework Statement An astronomer has independent measurements of both the apparent and absolute magnitudes of Alpha Centauri B, and a measurement of the extinction towards the star. Derive an algebraic expression for the distance to the star and a second expression that shows how the...

Hi, I am attempting the following question: 1. Homework Statement If the extinction in the infrared K-band (filter central wavelength = 2.13 micrometres) is 10 times less than it is in the optical V-band (filter central wavelength = 550 nanometres), what affect would a cloud of Av = 3 have on...

Hi guys, Disclaimer: not a physicist (I wish I was that brainy) Quick question regarding a speculative architecture project I am undertaking; In the completely hypothetical event of a huge, otherworldly solar flare super-charging the Earth's ionosphere beyond anything we have ever recorded...

The moon orbits Earth at a radius of 3.84E8 m. To do so as a classical particle, its wavelength should be small. But small relative to what? Being a rough measure of the region where it is confined, the orbit radius is certainly a relevant dimension against which to compare the wavelength...

I've always been fascinated with space and space travel and want to see humanity advance in that area. I've always thought the best way for me to contribute is to work in research and development for propulsion systems (which I'm interested in), however, my main passion in physics is...

Hi, I've applied to study the Bachelor of Science Advanced–Research(Honours) course at Monash University and I intended on majoring in Astrophysics, but after doing some research I'm feeling really uneasy about it since it doesn't seem like there are a lot of jobs available for people doing...

Online classes... changing duty stations, maybe even deployments. Trying to pursue any degree is difficult while active duty military, but especially when you're pursuing a degree that requires many labs that are difficult or even impossible to complete fully online or with a lab kit. I'm a...

Hi all, I have completed a Bachelor of Science (Biological Sciences) and Graduate Diploma of Science (Applied Data Science). I have always loved Maths and Physics, but never really pursued it as I thought there were not many jobs for them (but I have taken first year Maths courses as electives...

I am currently a student studying for my degree and I'm 18. My question is that is it possible to pursue Computer Science and Astrophysics simultaneously. As a child I was fascinated with the origin of the universe and wanted to know how everything started and how everything works and later in...

Hi! I'm currently reading "The Virial Theorem in Astrophysics" by G.W. Collins (the book is available as a free web edition at http://ads.harvard.edu/books/1978vtsa.book/) in which the author claims the importance of the ergodic hypothesis when applying the virial theorem to astrophysical...

Hi everyone, My name is Zack and I'm new to the forum. I recently changed careers from audio engineering to astronomy and am queuing up to attend the University of Oregon in about a year. I'm a big fan of all the historic great astronomers, scientists and others who have contributed to the...

Hi! I need to find multiple ideas for a physics investigation relating to astrophysics. The investigation is going to be like a lab report and must include data analysis and be maximum 2000 words. I have already thought of one idea: Investigating the relationship between the size and the...

I've been working on a crude N-body simulator which allows N bodies of equal masses to interact gravitationally in 2 dimensions. My goal is to model the formation of Solar System. Each body is modeled as a circle with a radius as a function of its mass, in such a way that all bodies have the...

Could anyone please guide me how to do these problems?

what is this unit, ⊕ ?? was reading an astrophysics book and came across it. "Gas Giant planets (>10 M⊕)" I am guessing that its mega something?

Hello those who are reading! I have just graduated with my undergraduate Bachelors degree in Civil Engineering with a 3.4 GPA. I currently work for a large civil construction company as a field engineer. I have written and published a Children's book about engineering. I am looking to start...

Hey everyone, I'm new here and I hope I can get some help with this! I recently decided to start the no doubt long and painful process of teaching myself physics in order to pursue a lifelong obsession of mine, that being outer space / planetary science. I don't seek a formal education in this...

Why do galaxy and galaxy clusters look so colorful?

Hi all, I am currently deciding which astrophysics/astronomy graduate program to attend. I will like to know what types of facilities, people, environments etc. indicate a strong astrophysics program. Please list them in order of importance. By the way, the universities I am looking at...

I just recently read about how we got to know the true age of the Earth but I am a bit confused and curious about one thing. The mineral or rock is initially going to be a uranium right? If it is, isn't all of it going to decay at the same rate? I know that a radioactive reaction is spontaneous...

Hi! So, I made into all the unis I applied to, for astrophysics and astronomy, ended up choosing the one not as well ranked only because I made it into their concurrent education program with astrophysics, chose a professional program over a Bsc here. I'm scared, I love astronomy and physics but...

Looking for thoughts. I have recently gained an interest in Astrophysics and have considered going back to school to study the subject. I have a BS in Computer Science, and an MS in Information Technology and I believe my background is close enough to consider an MS program in Physics. However...

Hello, I am about to attend the University of Hawaii at Hilo as an Astrophysics major. I intend to complete my education through getting my PhD in Applied Physics, but I wanted to know if it was necessary to get a Master's? I would think so because of getting a BA in Astrophysics instead of AP...

Hi there, I'm from Brazil and I'd like to ask you guys: is it too dificult get a job as astrophysics researcher/teacher? I'm moving out of my country to study astrophysics in europe, so I'm going to do it no matter the answers since I love this field of study. But I just wanted to know how big...

If there is a "theory of everything", a single equation that basically explains everything, why should be study Astrophysics, Condensed matter, or so? I mean we should rather study String Theory, Quantum Gravity... So, am I wrong? Maybe I'm leaving some important details.

Even though Cosmology and astrophysics are pretty much the same thing, still there are some differences. Cosmology is like more mathematical, more theoretical. If you are a cosmologist you can apply ideas from String Theory or so. But if Astrophysics is more "experimental". I mean, obviously...

Homework Statement Consider a rapidly rotating asteroid with an albedo (reflectivity) averaged over the solar spectrum of 0.05 that orbits around a 3 solar mass star that has the same surface temperature as the Sun. The asteroid’s orbit has a semi-major axis of 15 AU. What is its equilibrium...

This is the problem given at my basic astronomy course. If I turn it in within a month correctly, I get 10 extra points in the finals. Problem: We have binary star system consisting of Star A and Star B. Astronomers have observed it for 11 years, during which it has moved from point A to point...

I had recently appeared for 10th standard examinations. I want to make a career in astronomy, cosmology, and similar fields. I am looking for guidance & assistance for the same. Request for help from anyone from the similar field. Appreciate the response. Thanks & Regards

Homework Statement Calculate the radius of a 1.3 Msun white dwarf using the mass-radius relation for white dwarfs. Give the answer in solar radius. Homework Equations Mass-radius relation: $$R \propto M^{-\frac{1}{3}}$$ The Attempt at a Solution So I've tried the following: $$R_{D} \propto...

It seems that for a long time astronomy and cosmology have been based on observation and then speculation. Those two tasks are both very hard on their own, with the observation costing tons of money to be able to produce effective telescopes and observation methods. Speculation is even harder...

Hello, I am a 19 year old female who just graduated from a community college with an Associate in Science degree. I chose to major in physics and am planning on continuing my degree this Fall at a University. My issue is that I want to go into the Astrophysics field, but I am greatly worried...

my science and math teachers arent that good i have started to like planets and the idea of quantum mechanics I've been having dreams of me looking up at the sky and seeing saturn and Mars its making me want to learn more where do i start?

According to Cornell university's ask an astronomer site, we figure out the layers and their density of planets by checking the trajectory of a satellite /space probe or something like that, near the planets. But planets are quite spherical. then their density profile shouldn't be effecting the...

I recently came across a paper where there was a term ''stochastic heating of very small grains". I went through some papers on this area but I am still confused about it. What is the vibrational temperature associated with very small grains? Does temperature has got a meaning if it's a highly...

As the title says...I am hoping for recommendations for the 2017 summer. Specifically, Southeast US, one week residential, hopefully under or around 500 dollar physics or astronomy camp for rising 9-12 graders. Thank you very much.