Back to Show
NOVA
UFO Sightings: How Scientists are Trying to Capture More Data
There have been reports of UFO and UAP sightings for decades, but these accounts are often difficult to verify. Now, scientists are in search of the elusive: hard data. From machine learning sites that analyze the sky 24/7, to a crowd-sourcing app that asks the public to submit their own UFO videos, discover the inventive methods at play to capture more data.
Support Provided By
53:45
Follow the surprising evolutionary journey that led to the majestic elephant.
53:46
Discover the untold story—full of surprising evolutionary leaps—behind every bite we take.
53:34
The story of the dolphin reveals how intelligence evolved, step by step, over billions of years.
Unlock with PBS Passport
53:42
Step into the stunning cave that’s reshaping our understanding of prehistoric art.
Unlock with PBS Passport
53:41
Witness how Native North Americans have generated scientific knowledge over thousands of years.
53:34
Follow the relentless quest that led to a breakthrough treatment for a deadly disease.
Unlock with PBS Passport
53:40
Archaeologists investigate the dramatic origins of democracy in ancient Greece 2,500 years ago.
53:08
Follow the Artemis mission to bring humanity back to the Moon for the first time since Apollo.
Unlock with PBS Passport
53:25
Surprising evidence at the world’s oldest temple overturns our understanding of human history.