Astronomers from the United Kingdom have launched a citizen science project, dubbed ‘Black Hole Hunters,’ urging the public to assist in the search for hundreds of thousands of invisible celestial objects within our galaxy. By leveraging the efforts of volunteers analyzing data from NASA’s TESS space telescope, scientists hope to significantly accelerate the discovery process for these cosmic giants.
Invisible Giants: Where Are They Hiding?
Scientists estimate that the Milky Way may have produced over 10 million black holes throughout its 13-billion-year history, yet only around 70 have been identified to date. The primary reason for this stark discrepancy is their inherent invisibility. Black holes are formed from the collapse of massive stars once they exhaust their fuel. Their gravity is so immense that not even light can escape their grasp. However, they reveal their presence by distorting the light of nearby objects.
The ‘Black Hole Hunters’ project is specifically looking for a particular manifestation of this effect: a black hole, formed from a companion star, orbiting its stellar partner. If such a system is aligned with Earth, the black hole will periodically pass between its star and our planet, acting as a cosmic lens that temporarily magnifies the star’s brightness.
Join the Scientific Mission: How It Works
Information gathered by NASA’s Transiting Exoplanet Survey Satellite (TESS) is being used to find these hidden objects. While TESS’s primary mission is to detect exoplanets, its method of observing slight changes in star brightness is ideally suited for identifying the effects caused by black holes. Automated algorithms have already performed preliminary analyses on millions of stars, but artificial intelligence struggles to distinguish these gravitational lensing events from natural stellar phenomena like flares, which can lead to false positives. This is where human eyes come in. Each light curve is analyzed by multiple volunteers, and their responses are averaged to minimize errors.
“You’ll be narrowing down exactly where we need to point our telescopes,” notes Adam McMaster, one of the project leaders. “And you might be the one to discover a black hole.” No special training is required to participate – only a computer and a few spare minutes. Participants are shown examples of what to look for, and all they need to do is identify the correct patterns.
