AI Uncovers 10,000 New Planets in NASA Data

Humanity might be about to more than double the number of known planets in our universe, all thanks to looking at old data in a new way.

Researchers at Princeton University trained artificial intelligence to scan through NASA's Transiting Exoplanet Survey Satellite (TESS) data and found 10,091 planet candidates that had been hiding in plain sight. The team, led by graduate researcher Joshua Roth, published their findings in The Astrophysical Journal in April.

The secret was looking where others hadn't bothered to search. TESS finds planets by watching them pass in front of their stars, causing a tiny dip in brightness. Most scientists focus on brighter stars because the dimming is easier to spot.

This team did something different. They trained machine learning to detect patterns around stars 16 times fainter than usual TESS targets, scanning through 83 million stars from the telescope's first year alone.

The researchers have already confirmed one of their discoveries works out. TIC 183374187 b is a scorching hot gas giant similar to Jupiter, orbiting extremely close to its host star. Thousands more await confirmation.

To put this in perspective, humanity has confirmed just over 6,200 exoplanets since the very first one was discovered in 1995. That's roughly 30 years of searching. This single study could add another 10,000 worlds to the mix.

Not all the candidates will turn out to be planets. Some might be other objects or just noise in the data. But even if half prove real, we're talking about a massive leap forward.

The Ripple Effect

This discovery shows how much we miss when we only look at the obvious targets. The universe is full of faint stars, and apparently they host plenty of planets too.

The team plans to continue their work using TESS data from year two and beyond. Meanwhile, NASA's Nancy Grace Roman Space Telescope, launching in 2026, will let scientists study these distant worlds in unprecedented detail rather than just counting them.

We're entering an era where finding planets is becoming routine, but understanding them is the new frontier. NASA's future Habitable Worlds Observatory will push even further, searching specifically for planets that might support life.

Three decades ago, we didn't know for certain that planets existed around other stars. Today, we're drowning in them, and the treasure hunt has only just begun.