Scientists discover 4 new planets that share Earth-like traits– but there’s a catch

Every now and then, space surprises us– and this time, the buzz is all about four small rocky planets found around one of our closest stellar neighbours. No, they’re not Earth 2.0. But they do share something in common with our planet: they’re solid, rocky, and not too far from us compared to the vastness of space

Astronomers are pretty excited about this discovery– not because these planets can support life, but because they’re really small. In fact, they’re some of the smallest ones ever found outside our Solar System. What makes it even more interesting? These planets are circling Barnard’s Star, which is just six light-years from us.

As per a report presented by India Today, the newly discovered planets– simply labeled b, c, d, and e for now– are much smaller than Earth. Each has a mass between 20% and 30% of our planet’s, making them some of the lightest exoplanets ever identified using the “radial velocity” technique.

The technique may sound complex, but put simply, scientists detected tiny shifts in the star’s motion– subtle movements caused by the gravitational pull of nearby orbiting planets.

Detecting such small planets isn’t easy– their signals are incredibly subtle, especially when their host star is noisy and active. But thanks to advanced instruments like the MAROON-X on the Gemini North Telescope in Hawaii and the ESPRESSO spectrograph in Chile, researchers managed to catch these faint signals and trace them back to the planets, media report suggests.

Now for the not-so-exciting part: These planets, despite being rocky like Earth, are far too hot to support life. As per the report, all four orbit their red dwarf star at very short distances– the closest circles the star in just over two days, while the farthest takes nearly a week. That kind of closeness means surface temperatures are extremely high, wiping out any hope of them being habitable– at least based on what we know about life.

Even if these planets aren’t livable, they’re still a big win for space science. Finding small, rocky planets so close to us proves that Earth-like planets may be more common than we thought– and our tools to detect them are getting sharper.

Each new discovery like this helps scientists refine their techniques and learn more about how planets form around stars– especially stars like Barnard’s, which are smaller and cooler than our Sun.

According to the report, the research team, led by Ritvik Basant from the University of Chicago, published the discovery in The Astrophysical Journal Letters. While the planets themselves might not be home to aliens, they’re an encouraging sign that we’re looking in the right places. As we keep trying to understand where we fit in the universe, finding these four tiny planets is a small but meaningful step. Space is full of surprises– and this one was closer than we expected.