Determining the exact odds of there being no other life in our galaxy is currently impossible due to the lack of conclusive evidence. However, it is a topic of great interest and speculation among scientists and researchers.
The Milky Way galaxy, which is our home galaxy, is vast, containing hundreds of billions of stars. Many of these stars are similar to our Sun and are believed to have planets orbiting them. Given the sheer number of potentially habitable planets, the odds seem favorable for the existence of life elsewhere in the galaxy.
The Drake Equation, a scientific formula proposed by astrophysicist Frank Drake, attempts to estimate the number of extraterrestrial civilizations in our galaxy. It takes into account factors such as the rate of star formation, the fraction of stars with planets, the likelihood of life emerging on suitable planets, and other variables. However, since several of these factors are currently unknown, the equation can only provide a rough estimate.
Considering the vastness of the universe and the number of galaxies it contains, it seems improbable that Earth would be the only planet to harbor life. However, until we obtain concrete evidence or make contact with extraterrestrial life, the exact odds remain a matter of speculation and ongoing scientific inquiry.