# Is the solar system bigger than a light year?

## Is the solar system bigger than a light year?

The Light Year is about 64,500 times larger than the Astronomical Unit, too large to be appropriate for an object the size of our solar system. The Light Year is fine for measuring distances to stars or other galaxies but not for measuring distances within our own solar system.

### What is the size of solar system?

We took the radius of the solar system to be 39.5 AU, which means it has a diameter of 79 AU. This means you could put the Solar System about 3440 times between the Sun and the nearest star taking this definition.

What is the true size of the solar system in astronomical units?

Now, that is a lot of zeros, so let’s simplify it into astronomical units. 1 AU(distance from the Earth to the Sun) equals 149,597,870.691 km. Based on that figure, Sedna is nearly 960.78 AU from the Sun and the Solar System is 1,921.56 AU in diameter.

Is the solar system 1 light year?

Astronomers suggest that the solar system is about 0.5 light year long or possibly even a full light year.

## How big is the galaxy in light years?

Our galaxy probably contains 100 to 400 billion stars, and is about 100,000 light-years across.

### How far does the solar system travel in a year?

The answer depends on what motions you include. The speed of the solar system around the galactic centre is about 230 kilometres per second. If you only include that, then you travel 7.26 billion kilometres per year, or 479 billion kilometres overall.

How big is our galaxy in light years?

52,850 light yearsMilky Way / Radius

How big is Milky Way in light years?

## How thick is the Milky Way in light years?

1000 light-years thick
The Milky Way is a barred spiral galaxy around 13.6 billion years old with large pivoting arms stretching out across the cosmos. Its disk is about 100,000 light-years and just 1000 light-years thick, according to Las Cumbres Observatory (opens in new tab).

### How thick is the Milky Way in light-years?

How long would it take to get to the Andromeda galaxy at the speed of light?

Although it may be one of the closest galaxies to our own, since the Andromeda Galaxy is 2.5 million light years distant it would take 2.5 million years to get there if (and it’s a huge ‘if’) we could travel at the speed of light.

How big is our galaxy in light-years?