300 sextillion.
No, because it will be impossible for Hubble make a 3D map of at least 100 billion galaxies (i.e. 60 billion spiral and barred spiral galaxies, 20 billion lenticular galaxies, 15 billion elliptical galaxies, and 5 billion irregular/peculiar galaxies) in the observable universe, at distances up to 13 billion light-years; since the observable universe is 13.7 billion light-years in diameter.
1.5 trillion.
The estimated number of satellite galaxies, given that there are 100 billion galaxies in the universe, is 170 billion.
There are at least 20 billion lenticular galaxies in the universe.
There are at least 15 billion elliptical galaxies in the universe.
There are at least 5 billion irregular galaxies in the universe.
There at least 60 billion spiral galaxies in the universe because the spiral galaxies comprise of about 60 percent of all galaxies which are about 100 billion.
There are approximately 100 billion galaxies in the known Universe.
There are at least 15 billion elliptical galaxies in the observable universe, at distances up to 13 billion light years.
There are at least 5 billion irregular galaxies in the observable universe, at distances up to 13 billion light years.
There are at least 20 billion lenticular galaxies in the observable universe, at distances up to 13 billion light years.
WikiSky will be unable to map all the 100 billion galaxies in the universe considering that there are most likely more than 100 billion galaxies.