On the day of the spring equinox, astronomers have handed us a fitting piece of news: Earth may have a near neighbour in the cosmos that could, under the right conditions, support life.
A team of researchers has confirmed the existence of GJ 887 d, a super-Earth orbiting within the habitable zone of the red dwarf star GJ 887 — just 10.7 light-years from Earth. It is the second-closest known exoplanet in a habitable zone, surpassed only by Proxima Centauri b.
What We Know
GJ 887 d was confirmed using high-precision spectrograph data gathered from the Very Large Telescope and La Silla Observatory in Chile, employing the radial velocity method — measuring the subtle wobble of the star caused by the gravitational pull of an orbiting planet. The findings were accepted for publication in Astronomy & Astrophysics.
Key characteristics:
- Mass: At least 6.1 times that of Earth — qualifying it as a super-Earth
- Orbital period: ~50.7 days
- Orbital distance: 0.212 AU from its host star
- Distance from Earth: 10.7 light-years
- Zone: Confirmed within the habitable zone, where liquid water could exist on the surface
Scientists believe GJ 887 d could be a large rocky planet or an ocean world — both configurations that, depending on atmospheric composition, could potentially support conditions for life.
The Unusually Quiet Star
What makes GJ 887 d especially exciting is its host star.
Red dwarf stars are the most common in the galaxy and are prime targets for exoplanet hunting precisely because their small size makes orbiting planets easier to detect. But they have a reputation problem: many red dwarfs are hyperactive, blasting nearby planets with ultraviolet radiation and stellar flares that can strip away atmospheres and sterilise surfaces.
GJ 887 is remarkably calm. It shows unusually low flare activity compared to other red dwarfs — meaning any atmosphere around GJ 887 d has a far better chance of surviving intact. A stable, persistent atmosphere is considered one of the prerequisites for liquid water and, by extension, life as we know it.
"The low activity of GJ 887 makes this one of the most promising nearby habitable-zone candidates we've found," said researchers involved in the discovery.
What Comes Next
At 10.7 light-years, GJ 887 d is not reachable with current technology — even Voyager 1, humanity's most distant object, travels at roughly 0.006% the speed of light. A journey there would take over 100,000 years with present propulsion.
But proximity in astronomical terms is invaluable for observation. GJ 887 d is now among the highest-priority targets for next-generation space telescopes including NASA's Habitable Worlds Observatory (HWO) and the proposed LIFE mission, both designed to directly image nearby exoplanets and search their atmospheres for biosignatures — chemical signs of life.
We are, almost certainly, not alone in the universe. Every confirmed habitable-zone planet brings the evidence for that belief one step closer to proof.
Ten point seven light-years away, a world is orbiting a quiet star. On the longest day of spring, we now know its name.
Sources: Astronomy & Astrophysics (2026, accepted) · Very Large Telescope / La Silla Observatory, ESO · NASA Exoplanet Catalog · iflscience.com · astronomy.com · dailygalaxy.com · Wikipedia: 2026 in science
