When it comes to galaxies, our first reaction is that they are huge monsters in the universe, but in fact, they can also be very mini. Recently, astronomers discovered the smallest and faintest dwarf galaxy to date, "Andromeda XXXV"”, located around the Andromeda Galaxy, about 3 million light-years from Earth.

Its volume is only one millionth that of the Milky Way (the diameter of the Milky Way is 85,000-90,000 light-years), but its structure is very complete and has all the basic characteristics of a typical galaxy.

For example, this is like a human being the size of a grain of rice.

Astronomers believe thatThe environment in the early universe was extremely harsh, with high temperature and high density. Even miniature galaxies should have been completely destroyed. By then, XXXV Andromeda had existed stably for at least 6 billion years and was constantly forming new stars.

What's its secret? Astronomers are still studying it urgently.