Does Eris have any volcanoes?
The dwarf planets Eris and Makemake, which reside beyond Neptune, are probably home to ice volcanoes that recoat their surfaces continually with nitrogen frost, said Will Grundy at Lowell Observatory and Orkan M.
Why does haumea spin so fast?
A violent formation Billions of years ago, a large object may have collided with the body, knocking most of the surface ice away and imparting a rapid spin to Haumea. The spin, in turn, elongated Haumea into its unusual shape.
Why is haumea an oval?
While most rotating bodies in equilibrium are flattened into oblate spheroids, Haumea rotates so quickly that it is distorted into a triaxial ellipsoid. If Haumea were to rotate much more rapidly, it would distort itself into a dumbbell shape and split in two.
How close does haumea get to the sun?
43 astronomical units
Is the sun black?
As with all matter, the sun emits a “black body spectrum” that is defined by its surface temperature. So, the sun actually emits energy at all wavelengths from radio to gamma ray. But, as can be seen in the image above, it emits most of its energy around 500 nm, which is close to blue-green light.
Why is the sun no longer yellow?
Used with permission. When we see the Sun at sunrise or sunset, when it is low in the sky, it may appear yellow, orange, or red. But that is only because its short-wavelength colors (green, blue, violet) are scattered out by the Earth’s atmosphere, much like small waves are dispersed by big rocks along the shore.
What star is the coldest?
List
| Star name | Temperature (K) | Distance (light years) |
|---|---|---|
| WISE J0855-0714 | 225–260 | 7.27±0.13 |
| CFBDSIR 1458+10B | 370 | 104 |
| 2MASS 0939-2448 A/B | 650 | 17.4±0.4 |
| 2MASS 0415-0935 | 764 | 18.6±0.2 |