By seismic waves that are inscribed all over the surface of the earth from distance earthquakes.
Answer:
The Milky Way is much wider than it's thickness. So it is a narrow band with many stars in it, while the sky outside the band has much fewer stars.
Shapley's 20th-century observations of globular cluster orbits, which center on a point about 30,000 light years from our Sun, showed we weren’t in the center of the galaxy.
Explanation:
- The structure of our galaxy is formed by the six paths as the nucleus, the central bulge a disk, has spherical arms ad spherical components and surrounded by a huge and large halo. Being a disk-shaped this galaxy is spiral in nature and denser stars are closer to the galaxy.
- The milky way is located about 30,000 light-years away from the sun and its galactic center is far from the center which is dominated by a supermassive black hole.
T<span>he Great Migration (in East Africa, mainly Kenya and Tanzania) is principally herds of wildebeest and zebra following their food and water supply.</span>
.answer:
<em>"the event was a paradigm shift and scientific revolution. by 1966 most scientists in geology accepted the theory of plate tectonics. the root of this was Alfred Wegener's 1912 publication of his theory of continental drift, which was a controversy in the field through the 1950s"</em>
explanation: