Today’s Video of the Day from NASA Goddard describes how scientists are using observations of Earth to search for similar worlds.
During a lunar eclipse in January of 2019, a research team led by astrophysicist Allison Youngblood at UC Boulder used the Hubble Space Telescope to try to view Earth as if it were an exoplanet.
Youngblood said that the findings may ultimately help scientists narrow the search for the possible fingerprints of life on distant planets. In this case, the researchers measured ozone in the atmosphere.
“Ozone is what we call a biosignature,” said Youngblood. “It’s a byproduct of molecular oxygen, which can be a byproduct of life.”
Video Credit: NASA Goddard