There are a few units or scales that measure these extreme distances:
Light Years - The distance taken for light to travel in one Earth year (365.24 day)
* Approx. 300,000km/ second * 60 seconds * 60 minutes * 24 hours * 365.24 days
Astronomical Units (AU) - The average distance between the Earth and the Sun
* 93,000,000 miles or 149,668,992 km - Jupiter is about 5.2 AU from the Sun
Parsecs - Based on a formula
* Basically 1 Parsec = 3.26 Light Years or 3.09 × 1013 km
Yes, galaxies can be any size and shape.
Yes, it's generally true that dwarf galaxies are significantly smaller than larger galaxies like the Andromeda Galaxy. Dwarf galaxies typically contain fewer stars and have a lower mass, often being about one-fifth to one-tenth the size of larger galaxies. Andromeda, for instance, is one of the largest galaxies in the Local Group, while dwarf galaxies vary greatly in size and composition, making them much smaller by comparison.
Galaxies can be classified into three main sizes: dwarf galaxies, which are small and contain less than a few billion stars; Milky Way-sized galaxies, which are intermediate in size and contain a few hundred billion stars; and giant galaxies, which are massive and can contain trillions of stars.
In the night sky, celestial objects can be ordered by size from smallest to largest as follows: stars, which are massive balls of gas undergoing nuclear fusion; planets, which are smaller bodies that orbit stars; moons, which are natural satellites that orbit planets; and finally, galaxies, which are vast collections of stars, planets, and other cosmic material. Beyond galaxies, the universe itself encompasses all these objects, making it the largest scale of measurement.
It is currently believed that most, if not all, galaxies contain supermassive black holes at their centers. These black holes can vary in size, with some being relatively small and inactive. However, the presence of supermassive black holes in galaxies is a common feature in the universe.
Yes, galaxies can be any size and shape.
No, space galaxies are not all the same size. They vary widely in size, ranging from dwarf galaxies with just a few billion stars to giant galaxies containing trillions of stars. Factors such as their formation history, environment, and interactions with other galaxies contribute to these differences in size. Additionally, galaxies can change over time due to mergers and gravitational influences.
The space in between galaxies is far larger than the galaxies themselves.
are spiral galaxies are generally older than elliptical
size and shape
From dwarfs to giants.
A measurement close to true size is referred to as Precision Measurement.
Yes, it's generally true that dwarf galaxies are significantly smaller than larger galaxies like the Andromeda Galaxy. Dwarf galaxies typically contain fewer stars and have a lower mass, often being about one-fifth to one-tenth the size of larger galaxies. Andromeda, for instance, is one of the largest galaxies in the Local Group, while dwarf galaxies vary greatly in size and composition, making them much smaller by comparison.
Large and Dwarf.
Galaxies are classified by their shape and size. The main kinds are ellipticals, spirals, irregular and dwarfs.
They are measured in light years. Galaxies are often 100,000 light years across or more.
You can measure very large distances, such as the size of the observable universe or distances between galaxies, using yottameters. This unit of measurement is rarely used in practical applications due to its extremely large scale.