A large crater on Mars may help explain where Phobos, the planet's doomed moon, came from, according to ScienceDaily. The outlet published the report on Saturday, September 19, 2026. ScienceDaily describes Phobos as Mars' doomed moon, framing the crater as a possible key to its origin.
The report ties the crater to the question of how Phobos formed. ScienceDaily does not present a full explanation in the material available, but the framing places the crater at the center of research into the moon's beginnings. Phobos is described as doomed, a reference to the expectation that it will not survive indefinitely.
The origin of Phobos has been an open question, and the crater is presented as evidence that may bear on it. ScienceDaily's headline and summary do not name a specific crater, a research team, or a journal, and no findings beyond that framing are stated.
What to watch next: whether researchers publish detailed results linking the crater to a specific formation scenario for Phobos, and how the wider planetary science community responds to that claim.