What would happen if a neutron star collides with earth?

Before answering this question I will share few interesting facts about Neutron star. Neutron stars are smallest and the most densest star in our Universe. Its density is so high that even a 11 km diameter Neutron stars is 2 times heavier than Sum. Now lets

Why can't you see stars in videos of space?

Try it yourself. Get any video camera (a phone will do) and film a friend, lit enough so that the camera can see them, with the night sky as the background.Notice the total lack of stars in the video.Start a conspiracy theory as to how the video was faked.

Is there a ratio between how many stars and galaxies we see in the night sky?

The ratio of naked-eye stars to galaxies, in each hemisphere, is about 1500 to one.  On a cloudless moonless night, with low light-pollution and clear horizons, you can see about 3000 stars from any particular place. There are a total of about 6000 for the whole planet. There

What would happen if a neutron star was a cube?

There is no way it could be shaped into a cube. None at all. Neutrons can't be manipulated at the macroscopic scale by anything but gravity. And using gravity strong enough to reshape the neutron star would just tear it apart, sucking it into the black holes you were using.

Which star appears in the sky as the star which all other stars revolve around?

Jules Stoop is correct on both counts, however, on the second count, he has not mentioned the second one.Which star appears in the sky as the star which all other stars revolve around?There are two stars around which it appears the other stars are revolving around, Circumpolar star. In the northern

Is the Sun a double star?

As far as we can tell, no.There was the Nemesis hypothesis, which used data regarding extinction-level astronomical events to conclude that they happened at a regular time, indicating that perhaps the Sun had a companion, either a very large Jupiter-sized planet or brown dwarf (most likely nothing larger).However, the WISE (Wide-field Infrared Survey Explorer) mission eliminated

What will happen if a neutron star burst?

Neutron stars can and often do accumulate more mass over time, picking up gas, dust, and bits of rock and ice (or even larger bits - asteroids and comets). If there is aother star very close by, as sometimes happens with binary stars, the neutron star can slowly

When the light from all the stars in space finally reaches Earth, will the night sky be as bright as day?

The night sky will never be as bright as day. Though the reasons are somewhat more complex than the reasoning of the question.The most distant light arriving at Earth is the Cosmic microwave background and it is

What would happen if a neutron star approached the sun? What would happen to the sun?

IANAA (I am Not an Astronomer) but here is my layman's understanding of the consequences.The initial state of the situation would be that the neutron star would be passing through the solar system on a hyperbolic trajectory. In other words, it isn't in a closed orbit, and it's

How often does a new star appear in the sky because its light is first hitting the Earth?

Space is big. You just won't believe how vastly, hugely, mind- bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space.- The Hitch Hikers Guide to the GalaxyNot often.Out towards the edge of the visible universe, stars

What would happen if all the sugar in my jar was replaced with neutron star matter?

Okay, so about a 100 billion kilogrammes of neutron star material replaces the sugar in the jar you have.Now what will happen. To understand this we must first assume that the super dense material won't expand on reaching earth. The neutron

Would the night sky appear blue if one of the 'close' stars visible in the night sky went supernova?

Would the night sky appear blue if one of the 'close' stars visible in the night sky went supernova?We can go by descriptions of Tycho's Star, a nearby supernova that appeared in 1572. It was visible in daylight

What would the night sky look like from the surface of Jupiter?

Before I answer, I'll just put out that Jupiter is classed as a gas giant. It doesn't have a clear surface. What you consider the surface is probably the top of the atmosphere. So, in this scenario I'll consider the surface to be just above the atmosphere.Now to answer....Scenario One: It would look basically the

Are all stars as far away from each other as the closest one is to our sun? (The closest star to us is about 4.2 light years away, do all stars share that proximity to each other?)

No.All stars are different in size, age, speed, rotation and problably lots of others things. Under these conditions it is impossible to uphold a stable, even distribution of stars at a fixed distance.By the way, the closest star is our own Sun, 8 minuts and 20 seconds away (= 1 Astronomical Unit)

Why does Venus move around in the night sky?

For the same rules of Kepler's laws that make the other planets move:The first law: "The orbit described by a planet is an ellipse, of which the Sun occupies one of the two fires. »The second law: "The segment (radius vector) that joins the center of the Sun

What are the most awe-inspiring space pictures, and why?

The following are some of the pictures that I remember along with other pictures in this page. I have listed them under various categories.Nebulas: Pillars of Creation:     This is one of my favorite images of all and

If stars are 500 light years away, are we looking at real stars today in the sky?

I'm guessing you're wondering about the implications of the light-travel time between stars and Earthly observers. The fact that the light has taken a long time to get here doesn't make the stars any less real. Many people do like to point out

Where does the sun go when it goes down? How does the night sky show?

The Sun does not ‘go down'; we, on Earth, just rotate away from it. The Sun can be considered to be stationary. At night, without the Sun lighting up our atmosphere, the stars are revealed. They were there all the time, shining just as at night, except now

How is one side of the flight seeing bright sky while the other, a dark night sky?

Wow. What a question. Thanks for A2A. Aditya Suresh has asked that I simplify the answer to a school kid level. I am going to try but this is not a simple Q&A and takes a lot of 3-D visualization. However, if the kid

Shouldn't there be many, many planets wandering in space without orbiting a star?

Yes; in fact, scientists believe that is the case.The number of so-called

What percentage of light in the night sky are remnants of dead stars?

This question refers to the idea that many of the stars you see in the sky have died since the light you see was emitted. Unfortunately for the poetry of the notion, the naked eye cannot see very far.The farthest away star we can see as a distinct object is 16,308 light years away - so we are seeing

Why do we classify sun as a star?

Because our sun IS a star! That is, it is a big ball of - mostly - hydrogen gas, compressing to helium at its core and releasing energy in the process. The outward pressure of this reaction (known as fusion) is exactly

Why doesn't space time burn with energy of stars?

Space time is not a paper or something else that get burnt.we can burn paper but we can't burn air or water or space they are media.space is also a medium .Space time is also a medium and it can't be burnt just like that.

Can a neutron star last indefinitely? What is the ultimate fate of a neutron star if neutron degenerate matter is stable against beta decay?

Not indefinitely, but for s very very long time!!!There are only following options for final chapter in the story of neutron star's biography:it stays as it is and emits away its energy to slow down its rotation- trillions of yearsIt gets eaten by a black holeIt collids with another neutron star and has a massive explosion- a

Where can I see the night sky, particularly the Milky Way, clearly in Hyderabad?

Light pollution map gives some idea and Pocharam area does not look good for watching. Try to use the map to find better location. Right bottom side of Nizam sagar area looks better.

Why we don't see any stars in the background of Earth pictures?

Congratulations! You have seen original (not edited) Earth photographs! It happens due to exposure settings of the camera. Earth, when illuminated by Sun is quite bright on the space compared to the stars. So exposure of the camera should be set

Why do stars emit visible light?

Visible light is only one form of electromagnetic radiation. The full spectrum of electromagnetic radiation extends from very long wavelength radio waves to extremely short wavelength (and high energy) gamma rays. From the figure below taken from Electromagnetic spectrum,  you can see that the wavelengths vary tremendously in size. 

Why is there no bounce light on objects in space when it's filled with with bright stars?

Behold!Planets and their satellites in our solar system are not themselves luminous, but reflect light from the Sun. The Moon and Venus (each pictured below) are the two brightest objects in the sky after the Sun itself, and the light with which they shine is ‘bounced' starlight.

How many nights does it take to count the stars?

We can assume you mean count the stars in our night sky that can be seen with the naked eye with that numbering at about 3000 per hemisphere. An immediate problem that will occur is that you can't see every star from a single hemisphere on a single night as some will

Why don't stars light up the whole of space?

Oh, but they do!Any random direction intersects a star at some distance. When you're looking at the pitch black gap between two stars, you're actually looking in the direction of other stars. What am I saying

How many of the stars we see at night are actually dead?

Probably none that we can see with the unaided eye. The mist distant star we can see with the unaided eye is about 4,000 light years away. 4,000 years is a long time on a human scale, but it's not much compared to the lifespan of stars.The Unaided Eye

How many stars are there?

According to How Many Stars Are In The Universe? There are about 2 trillion galaxies in the observable universe, each containing on average 100 million stars.Therefore, the total number of stars in the observable universe is about [math]10^{20}[/math].

How realistic are these stars going by on front view screen of starship Enterprise?

This one always bugged me.  They're not realistic.  I rewatched the original series recently (I grew up with it)  and it still bugs me. The basic reason is that they do not obey parallax.  Stars are big things a long way away from each other.  (You think it's a long

How many human years will it take for light to reach the Earth from the farthest observable star?

Light will take 4 years, 3 months and 18 days to reach the Earth from the nearest star Proxima Centauri. However, from the farthest observable star, light would take around 1500 years to reach the Earth.And, if you want to travel atleast up to the nearest star Proxima Centauri it might take around

Why is the Sun a small star?

It's not a small star until you start comparing it with other bodies like Canis Majoris. We are the proud owners of a medium class star. One that has a solid core burning hydrogen into helium and trapping it there until it's moved on to Carbon where the pressure

What would happen if two neutron stars collided?

Gamma Ray Bursts, the most energetic phenomena in the galaxy capable of emitting more energy than an entire galaxy, probably occur when neutron stars collide.  Neutron star inspiral and collisions are also one of the most promising sources of gravitational wave sources for detection by LIGO. 

How does the light from a star tell us its distance and age?

Light that shines through or from gaseous elements, like hydrogen and helium, has dark lines in its spectrum. The locations of those lines vs the wavelengths of the light, are very well known to great accuracy. When you see light where those dark lines are all located at

If we could see all light frequencies and looked up at the night sky, would there be constant light shows of dying and forming stars and galaxies?

No...your eyes are too small.Given a large enough telescope, you could see what you described. In fact, that is already happening. We are constantly bombarded by radiation from the formation and termination of stars and galaxies.The problem is that most of this happens REALLY

Can stars turn into a black hole without a supernova?

An alternative view: Stars are too small to evolve into black holes. Ordinarily, it would take 3D matter-contents of far too many stars to form a black hole. Black holes are usually formed by accretion of 3D matter (bodies), near center of a galactic

What would happen if the Sun aged 1 billion times faster?

Well, it's currently 22:08 on November 14th 2017, so ...June 2018 - Increasing solar luminosity disrupts carbonate-silicate cycle, sequestering [math]CO_2[/math]. Plate tectonics starts to slow down. Photosynthesis starts to falter thanks to diminished [math]CO_2.[/math]August 2018 - Animal life extinct on Earth.November 2018 - Sun's luminosity up 10% and oceans starting to

Why is the night sky dark relating to Olbers' paradox?

Olbers paradox is only a paradox if you assume that-the universe is infinite-the universe is overall transparent-the universe is staticOlbers could not know that neither of the the three assumptions are true

How many stars are in the daytime sky?

Here's the simple "commonsense" answer: Just one star, Sirius, can be seen with naked-eye alone, if conditions are just right. Some of the other answers are not wrong, but are over-complicating the meaning of the question, in my opinion. To me, it seems very likely that the questioner meant  "stars visible to the naked-eye". If you do like

What will happen if I stand 1000 miles away a neutron star?

You'll be burnt to ashes long before you are 1000 miles nears it. They have a surface temperature around 6×105 K, whereas the sun is 5,778 K. The sun is about 93 million miles, still 3 million miles away, mind you-one would be met with a balmy 393.15 K.The Neutron star are so

What exists there between two stars?

Near the two stars, there will be matter in the super heated state due to the hot gases being expelled from the stars.Then, there will be collections of matter, which are the planets and asteroids and other bodies present in the star system (star system for