NASAのインスタグラム(nasa) - 2月3日 08時32分
No worries, #SuperBowl fans, this is an artist depiction of a neutron star, which is the densest object astronomers can observe directly, crushing half a million times Earth's mass into a sphere about 12 miles across, or similar in size to Manhattan Island, as shown in this illustration.
A neutron star is the crushed core of a massive star that ran out of fuel, collapsed under its own weight, and exploded as a supernova. A neutron star can spin as fast as 43,000 times per minute and boast a magnetic field a trillion times stronger than Earth's. Matter within a neutron star is so dense a teaspoonful would weigh about a billion tons on Earth.
Credit: NASA's Goddard Space Flight Center
#nasa #space#astronomy #superbowl #sb48 #superbowlxlviii #metlife #meadowlands #sports #nfl #supernova#stars #chandra #spitzer #biggame
[BIHAKUEN]UVシールド(UVShield)
>> 飲む日焼け止め!「UVシールド」を購入する
28,577
242
2014/2/3