Imagine finding a new Earth-like planet just 146 light-years away—a place that could potentially support life. Sounds like a dream, right? But here’s where it gets controversial: this promising world, named HD 137010 b, might be a frigid -70°C, more like Mars than our cozy home. So, is it a habitable paradise or an icy wasteland? Let’s dive in.
Astronomers have uncovered this intriguing planet, which is about 6% larger than Earth and orbits a sun-like star in a remarkably similar pattern to our own planet—a year on HD 137010 b lasts roughly 355 days. The discovery was made possible by data from NASA’s Kepler space telescope’s extended mission, K2, analyzed by an international team of scientists from Australia, the UK, the US, and Denmark. And this is the part most people miss: the planet was first spotted by a team of citizen scientists, including Dr. Alexander Venner, who was still in high school at the time. Talk about inspiring the next generation of researchers!
Dr. Chelsea Huang, a researcher at the University of Southern Queensland (USQ), explains that HD 137010 b has a 50% chance of being in the habitable zone of its star. What makes this discovery even more exciting is its proximity—just 146 light-years away. Compare that to Kepler-186f, the next best candidate, which is four times farther and 20 times fainter. But here’s the catch: the star HD 137010 b orbits is cooler and dimmer than our Sun, which could mean the planet’s surface is more like Mars, potentially locked in a deep freeze.
The initial detection of the planet came from a faint dimming event as it crossed in front of its star—a signal so subtle it was almost dismissed. Dr. Huang recalls, ‘Our first reaction was that this cannot possibly be true. But after double-checking and triple-checking, it’s a textbook example of a planetary transit.’ The star’s brightness and closeness make it an ideal target for the next generation of telescopes, ensuring it will be among the first to be studied in detail.
However, not everyone is ready to crown HD 137010 b as the next Earth. Dr. Sara Webb, an astrophysicist at Swinburne University, cautions that more data is needed to confirm its status as an exoplanet. ‘We’ve only detected one transit,’ she notes, ‘and the gold standard in planetary science is three.’ Webb also raises a fascinating possibility: HD 137010 b might not be a rocky, Earth-like world at all, but a ‘super snowball’—a large, icy planet with vast frozen water reserves.
Even though this planet is relatively close in galactic terms, don’t pack your bags just yet. Traveling there at our current speeds would take tens of thousands, if not hundreds of thousands of years. But here’s the thought-provoking question: If HD 137010 b turns out to be uninhabitable, does its discovery still matter? Or is the search for another Earth just a pipe dream? Let us know what you think in the comments—this is one debate that’s far from over.
