What is the shape of an irregular galaxy?
An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy. Irregular galaxies do not fall into any of the regular classes of the Hubble sequence, and they are often chaotic in appearance, with neither a nuclear bulge nor any trace of spiral arm structure.
What type of galaxy is described as having a circular shape with most?
Spiral galaxies Spirals are characterized by circular symmetry, a bright nucleus surrounded by a thin outer disk, and a superimposed spiral structure. They are divided into two parallel classes: normal spirals and barred spirals.
What are the 5 properties of stars?
A star can be defined by five basic characteristics: brightness, color, surface temperature, size and mass.
What information does the color of a star tell you?
A star’s color provides a direct measurement of its surface temperature; the hottest stars shine blue-white, while the coolest are dull orange or red. In turn, the temperature indicates how much energy a given area of the star’s surface radiates into space every second.
What is the rarest type of galaxy?
elliptical double-ringed galaxy
What is the youngest thing in the universe?
| GN-z11 | |
|---|---|
| GN-z11 superimposed on an image from the GOODS-North survey | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 12h 36m 25.46s |
What four properties does the HR diagram classify stars?
The Hertzsprung-Russell Diagram is a graphical tool that astronomers use to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage. Stars in the stable phase of hydrogen burning lie along the Main Sequence according to their mass.
Which is the shiniest star?
Sirius, also known as the Dog Star or Sirius A, is the brightest star in Earth’s night sky. The name means “glowing” in Greek — a fitting description, as only a few planets, the full moon and the International Space Station outshine this star.
What is the largest Star 2020?
UY Scuti
What is the second largest star in the universe?
With solar radii of 1,540-1,730, WOH G64 is the second-largest star in the Universe, located in a satellite galaxy of the Milky Way – Large Magellanic Cloud. It is a red supergiant star, 1,63,000 light-years away from the Earth.