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Astronomers Discover 'Satellite of a Satellite' System Fornax-7 Near Fornax Dwarf Galaxy
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News18•29-09-2026, 21:18
Astronomers Discover 'Satellite of a Satellite' System Fornax-7 Near Fornax Dwarf Galaxy
- •Astronomers, using Euclid Space Telescope data, discovered a faint stellar system named Fornax-7 near the Fornax Dwarf Galaxy.
- •Fornax-7's star mass is only 170 times that of our Sun, making it one of the faintest and lightest systems found.
- •Scientists are calling it a 'satellite of a satellite,' a discovery that could reveal secrets of galaxies and dark matter.
- •The system is approximately 9100 light-years from the center of the Fornax Dwarf Galaxy, with an estimated age of 10 billion years.
- •If gravitationally bound to Fornax, it would be the first instance of a low-mass galaxy having its own small satellite, challenging existing models.
Key Questions Answered
Fornax-7 is an extremely faint and low-mass stellar system located near the Fornax Dwarf Galaxy, discovered by researchers from the Strasbourg Observatory using data and new images from the Euclid Space Telescope.
If confirmed as a satellite galaxy, Fornax-7 would prove that low-mass galaxies like Fornax can also have their own small subhalos and satellites, taking the dark matter theory to a new level and aiding galaxy formation research.
Researchers suggest Fornax-7 could either be an ordinary star cluster without dark matter, a dwarf satellite galaxy surrounded by dark matter, or potentially a random object located within the Milky Way.
