The Mystery Of Aliens: Scientific Evidence; Signals & Search
BY: PRAGATI UPADHYAY
Scientists continue to question whether Earth hosts the only life in the universe. The Milky Way contains over 100 billion stars. Many stars host planets.
Are We Alone?
In 1961, astronomer Frank Drake developed the Drake Equation. It estimates the number of communicative civilisations in our galaxy. It remains a probability model, not proof.
The Drake Equation
Physicist Enrico Fermi famously asked, “Where is everybody?” The paradox highlights the contradiction between high probability and zero confirmed contact.
The Fermi Paradox
NASA explores Mars and icy moons like Europa. Scientists search for microbial life, water evidence and biosignatures. No confirmed alien life has been found.
NASA’s Ongoing Search
The SETI Institute scans space for artificial radio signals. The 1977 “Wow! Signal” remains unexplained. However, researchers never verified it as alien communication.
SETI & Radio Signals
Governments now use the term UAP (Unidentified Aerial Phenomena). The Pentagon has investigated sightings. Reports confirm anomalies but no extraterrestrial origin.
UFOs or UAPs?
Astronomers agree on one fact. No credible scientific evidence confirms alien life. Research continues. The mystery remains open. The universe still holds its secrets.