Sun-size lens could reveal alien continents and oceans

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Source: Science Magazine

Original: https://www.science.org/doi/abs/10.1126/science.aef0581?af=R...

Published: 2026-01-01T07:00:11Z

A lens the size of the Sun would use the gravitational bending of the Sun's light to magnify and reveal the surface details of distant exoplanets.[6] This gigantic natural telescope would make it possible to observe continents and oceans on exoplanets.[1] A study published in Science (vol. 391, no. 6780, pp. 11-12, January 2026) describes the microlensing event KMT-2024-BLG-0792/OGLE-2024-BLG-0516 as observed from both Earth and space.[1][3] The event was caused by a free-floating body with a mass of 0.219 (with an error of -0.046 to +0.075) the mass of Jupiter, without a host star or in a very wide orbit.[1] By combining the observations, mass and distance degeneracy was overcome.[1][3] Comparison with statistics of other microlensing events and simulations shows that the object formed in the protoplanetary disk as a planet, not in isolation as a brown dwarf.[1] Later, dynamical processes ejected it from the original system, creating a free-floating object.[1][3]