I Zwicky 18 facts for kids
Quick facts for kids I Zwicky 18 |
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I Zwicky 18 observed by the Hubble Telescope
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| Observation data (J2000 epoch) | |
| Right ascension | 09h 34m 02.0s |
| Declination | 55° 14′ 28″ |
| Redshift | 751±2 km/s |
| Distance | 0.059 Gly |
| Type | Irr |
| Notable features | Very young galaxy |
| Other designations | |
| UGCA 166, SBS 930+554, KUG 930+554, AGC 190351, HFE2003 PSX-01, CBB2012 79 | |
| See also: Galaxy, List of galaxies | |
The I Zwicky 18 is a small, irregular dwarf galaxy. It looks a bit messy, unlike spiral galaxies with neat arms. This galaxy is about 45 million light-years away from Earth. That's a huge distance! You can find it in the constellation called Ursa Major, also known as the Great Bear. An astronomer named Fritz Zwicky first spotted it in the 1930s.
A Galaxy Still Growing Up
I Zwicky 18 is quite special because it's a very young galaxy. It's only about 500 million years old. To give you an idea, our own galaxy, the Milky Way, is around 12,000 million years old! That's like comparing a baby to a grandparent.
Because it's so young, I Zwicky 18 is still busy making new stars. It's even forming very old types of stars called "Population III stars." These stars are almost entirely made of just two simple elements: hydrogen and helium. Most galaxies stopped making these kinds of stars a very long time ago. This makes I Zwicky 18 a great place for scientists to study how galaxies first began.
Related pages
Images for kids
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I Zwicky 18 and its component or companion I Zwicky 18 C
See also
In Spanish: I Zwicky 18 para niños
