Question

The dwarf galaxy in Sagittarius is the one closest to the Milky Way, yet it was discovered only in 1994. Can you think of a reason it was not discovered earlier? (Hint: Think about what else is in its constellation.)

Answer 1

Sagittarius was buried among countless intervening stars and dust. You could not see the dwarf galaxy because it was hidden and the technology was not available to see through the wavelengths.