A recent discovery has unveiled a potential “Bizarro Earth,” an icy exoplanet located just 150 light-years from our planet. Named HD-137010 b, this intriguing world is slightly larger and approximately 1.2 times the mass of Earth. Researchers have determined that it orbits its cooler, orange star, HD-137010, once every 355 days.
Key Characteristics of HD-137010 b
HD-137010 b exists in a region of space where conditions may allow for liquid water to form. Scientists estimate a 51 percent chance that this planet lies within its star’s habitable zone. The K dwarf star HD-137010 is about 70 percent the mass and size of the Sun, which contributes to its long lifespan due to slower hydrogen consumption.
- Orbital Period: 355 days
- Mass: 1.2 times that of Earth
- Temperature Range: -68 to -85 degrees Celsius (-90 to -121 degrees Fahrenheit)
Discovery Methodology
The discovery of HD-137010 b was made using data from NASA’s retired Kepler space telescope. Researchers employed the transit method to detect the planet. This involves monitoring a star for signs of dimming light, which indicates a planet passing in front of it.
Follow-Up Observations Needed
Considering that the planetary status of HD-137010 b is based on a single observation, further tracking is essential. Multiple transits must be observed to conclusively classify it as a planet. Such observations could stretch over several years, necessitating advanced observatories like ESA’s upcoming PLATO.
Potential for Habitability
Although HD-137010 b is currently quite cold, it’s hypothesized that it might support an atmosphere capable of maintaining liquid water. Researchers believe that a moderately CO2-rich atmosphere could create conditions for liquid water, despite the planet’s icy surface.
Climate Considerations
However, if the planet retains a CO2 abundance similar to Earth’s, it risks being trapped in a “snowball” climate, resulting in a fully frozen state. This scenario would reduce its ability to sustain surface life.
Implications and Future Research
The discovery of this “ice cold Earth” highlights the potential existence of other planets in the HD-137010 system. Researchers speculate that a more complex solar system architecture may be present, possibly housing additional planets. As humanity continues its quest to find habitable worlds, the findings regarding HD-137010 b could open new avenues for exploration.
Published in The Astrophysical Journal Letters, this research underscores the unique characteristics of HD-137010 b and its potential implications for the search for life beyond Earth.
