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BRIAN KOBERLEIN, UNIVERSE TODAY
A white dwarf isn t your typical kind of star.
While main sequence stars such as our Sun fuse nuclear material in their cores to keep themselves from collapsing under their own weight, white dwarfs use an effect known as quantum degeneracy. The quantum nature of electrons means that no two electrons can have the same quantum state.
When you try to squeeze electrons into the same state, they exert a degeneracy pressure that keeps the white dwarf from collapsing.
But there is a limit to how much mass a white dwarf can have.
Subrahmanyan Chandrasekhar made a detailed calculation of this limit in 1930 and found that if a white dwarf has more mass than about 1.4 Suns, gravity will crush the star into a neutron star or black hole.
A Megasatellite Orbiting Ceres Would Make a Fine Home For Humans, Scientist Says
21 JANUARY 2021
Given all the logistics involved, it s unlikely that humanity will ever see our way outside the Solar System to colonise exoplanets. But the possibility of settling elsewhere inside the Solar System isn t so far-fetched.
NASA is planning an outpost on the Moon. Crewed missions to Mars aren t far off. Heck, we even already have humans living off-planet (albeit for temporary stints) on the International Space Station.
So is there anywhere else in the Solar System that humans could make our home? Well, according to physicist and astrobiologist Pekka Janhunen of the Finnish Meteorological Institute in Finland, dwarf planet Ceres isn t entirely implausible.
For The First Time Ever, 2 Extremely Rare Miniature Giraffes Get Spotted In Namibia And Uganda BoredPanda staff
Did you know that giraffes have black tongues? Yep, no doubt only the hardcore giraffe lovers knew that one, but there is still a lot that is yet to be discovered about giraffes.
Hence, we have researchers out in Africa studying this amazing species of animals. And one such team of researchers were surprised to spot two wild dwarf giraffes the first of their kind. They were documented and the pictures have since been making headlines on the internet.
Turns out, dwarfism can also hit giraffes as seen in this research paper by a giraffe conservation group