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The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...
KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and ...
Discover 3I/ATLAS, an interstellar comet with a reddish hue, rich in water ice, and possibly predating the solar system.
The solar system's journey through the galaxy is more complex than most imagine. While we often picture planets orbiting the ...
Astronomers have hoped for the existence of Planet Nine for years. Things were looking promising, but this discovery might ...
NASA confirms the arrival of 3I/ATLAS, the third interstellar object. The ATLAS project spotted it in June 2025. Its speed ...
NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.
Sedna will reach its closest approach to the Sun in 2076, providing a remarkable space-faring opportunity that won’t come ...
Scientists are almost sure that there is a ninth planet. But a study by Japanese astronomers hints that this might not be true. A new cosmic body called a sednoid has been discovered near the Kuiper ...
A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.
The comet was identified as interstellar due to its highly eccentric hyperbolic orbit, which is unlike the elliptical orbits of native Solar System objects.
Professor Avi Loeb, a theoretical physicist and cosmologist from Harvard University, told MailOnline why he thinks a new ...