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Galaxies
Galaxies are large systems of stars and interstellar matter, and they contain billions of stars. Our own galaxy, the Milky Way, has 200 to 400 billion stars, and there are over one billion known galaxies. Questions that have to do with galaxies in general and specific galaxies are perfect for this category!
2,392 Questions
What happens to the shape of an elliptical galaxy as you move from E0 to E7?
According to the Hubble classification system, an E0 galaxy should appear almost perfectly circular in shape, with an E7 appearing highly elliptical. In effect, as the number gets larger the eccentricity of the ellipse increases, so an E0 has no eccentricity!
Why are stars able to produce fusion reactions?
That's because they have the fuel required - mainly protium (hydrogen-1). Also, because they are hot and dense enough to sustain such reactions. The heat and pressure is the result of gravity - when a gas is compressed, it gets heated up.
How do scientist classify sharks and rays?
Sharks and Rays belong to the class Chondrichthyes, the cartilaginous or non-bony fishes.
What happens if a person goes near the milky way galaxy?
Well, all known people ARE inside the Milky Way galaxy. However, if we go near other celestial objects inside the milky way, such as black-holes, and supernovas, we would surely get fried/distorted by the huge amounts of gamma radiation and the immense gravity of these objects.
What galaxy is the Cat's Eye Nebula in?
Considering the distance to the Cats Eye Nebula is only 3,300 light years away, it is going to be within our own Milky Way Galaxy.
What does the Milky Way move around?
Viewed from the Galactic North Pole, the Milky Way galaxy is moving anticlockwise.
Which planets are in the cigar galaxy?
There are no known planets in any galaxy other than our own. While it is doubtless that other galaxies, including the cigar galaxy, contain planets they are much too far away fur us to detect them.
Is the Milky Way Galaxy the only galaxy that can be seen from Earth?
There are other galaxies visible from Earth. Among them are the SMC (Small Magellanic Cloud) and LMC (Large Magellanic Cloud), and the Andromeda Galaxy (M31). These are just the ones visible to the naked eye at nighttime, of course. There are over 100 billion visible by other means, including telescopes used on ground or orbiting Earth.
Where in the galaxy are most stars born?
Stars are born in areas of space that contain a high enough density of molecular hydrogen to cause fusion. These areas of space are known as molecular clouds and are the locations in space where the majority of stars are created.
What causes a star to dim every 3 days?
A star that dims every three days would likely be a binary star system. Such a system consists of two stars that orbit their mutual center of mass. If their orientation is right then, from out perspective, one star will periodically block the other from view, reducing the amount of light we see from them.
How do you get money really fast on spiral knights?
1. buy 3 star recipes that u know if u make u will be able to sell
2.make the items from recipe
3. price them high like everyone else
4. rinse and repeat
All the galaxies and the space between them make up the universe?
It is a little more complicated than that. Beyond the galaxies there is also dark matter; of which science does not yet know its identity, but many observations show it exists. There is also dark energy and we have even less of an idea what that might be (although it might be vacuum energy as explained by some quantum field theories).
Also, this is just the visible Universe. The actual Universe might be much much larger!
13.75 billion years ago, the Universe started out in an extremely small, hot, and dense state known as a singularity. This singularity was nothing but energy. Then, in the Big Bang event, this singularity rapidly expanded to trillions of times its original size in less than a second. The Universe rapidly cooled from trillions to millions of degrees, and energy began to condense into subatomic particles called quarks and gluons. Protons, neutrons and electrons formed, creating the first atoms. Hydrogen was the first element, and continues to be the most abundant.
At first, the Universe was opaque. When it cooled down enough photons could escape and the Universe became transparent.
Millions of years later, gravity pulled together clouds of hydrogen to form the first stars. Stars synthesized all the heavier elements through nuclear fusion, such as helium, carbon, and oxygen. Furthermore, gravity pulled stars together into galaxies.
It would take thousands to millions of years for the Universe to cool to the temperature it is today, and it continues to expand today.
What was the worst disaster in the history of soviet space travel?
The worst disaster involving fatalities in a space shuttle was the Soyuz 11 space shuttle disaster which occured on June 30, 1971 when the shuttle depressurized while in space, resulting in the deaths of the three people onboard.
The worst disaster involving fatalities on the ground was the Nedelin Catastrophe on October 24, 1960, in which a missle exploded on the lauch pad, prior to a test flight. The resulting explosion killed 78 people, (official death toll) however some estimates say up to 150 were killed.
The color for Aries is Red, the 1st color in the spectrum of visible light.
What would be the best way to model the Milky Way?
bend long pipe cleaners to represent the spiral arms, and attach them to a baseball, which represents the central bulge
How far is Draco the constellation is from earth?
Draco is a constellation and thus made up of many stars with different distances.
The brightest is Gamma Draconis (γ Dra / γ Draconis) It has the traditional name Eltanin (also Etamin). Eltanin is an orange giant lying 148 light years away.
The closest is Struve 2398 which is a binary star system. Both stars are red dwarfs lying 11.5 light years away.
