In the event you can clearly see the spiral shape, the galaxy is called a "face-on spiral." In the event you in lieu see the galaxy from the side, it is called an "edge-on spiral." You can recognize edge-on spiral galaxies because you can see their bright central bulges. Face-on and edge-on spiral galaxies are not any different; they only look different because of the angle from which you see them.
The most common type of galaxy is called a "spiral galaxy." Not surprisingly, spiral galaxies look like spirals, with long arms winding toward a bright bulge at the middle. But be cautious - in the event you looked at a spiral galaxy from the side, you could mistake its shape for a circle, and so you'd must make use of other criteria to learn it was a spiral.
About 77% of the observed galaxies in the universe are spiral galaxies. Our own galaxy, the Milky Way, is a typical spiral galaxy.
Some spiral galaxies have arms that are wound tightly, while other galaxies have loosely-wound arms. The difference between tightly and loosely wound spirals is a actual difference between the galaxies, and can be used to classify spirals.
Some spiral galaxies have a bright line, or bar, walking through them. These are called "barred spiral galaxies.
The arms of a spiral galaxy have lots of gas and dust, and they are often areas where new stars are constantly forming. The bulge of a spiral galaxy consists primarily of elderly, red stars. small star formation goes on in the bulge
Spiral galaxies are further classified by how tightly their spiral arms are wound. A galaxy with tightly wound arms, such the left galaxy in the list above, would be called "type a." galaxy A "type b" galaxy has more loosely wound arms. A "type c" galaxy (such as the middle above) has loosely wound arms. What type do you think the barred spiral to the right would be?
The most common type of galaxy is called a "spiral galaxy." Not surprisingly, spiral galaxies look like spirals, with long arms winding toward a bright bulge at the middle. But be cautious - in the event you looked at a spiral galaxy from the side, you could mistake its shape for a circle, and so you'd must make use of other criteria to learn it was a spiral.
About 77% of the observed galaxies in the universe are spiral galaxies. Our own galaxy, the Milky Way, is a typical spiral galaxy.
Some spiral galaxies have arms that are wound tightly, while other galaxies have loosely-wound arms. The difference between tightly and loosely wound spirals is a actual difference between the galaxies, and can be used to classify spirals.
Some spiral galaxies have a bright line, or bar, walking through them. These are called "barred spiral galaxies.
The arms of a spiral galaxy have lots of gas and dust, and they are often areas where new stars are constantly forming. The bulge of a spiral galaxy consists primarily of elderly, red stars. small star formation goes on in the bulge
Spiral galaxies are further classified by how tightly their spiral arms are wound. A galaxy with tightly wound arms, such the left galaxy in the list above, would be called "type a." galaxy A "type b" galaxy has more loosely wound arms. A "type c" galaxy (such as the middle above) has loosely wound arms. What type do you think the barred spiral to the right would be?