This Day in History

05-01-2023 11:26 AM

Ammon News - On January,5 2005, the most massive and second-largest known dwarf planet in the Solar System, was discovered on this day in 2005 by a Palomar Observatory-based team led by Mike Brown.

The planet’s discovery, which led to the downgrading of Pluto, was verified later that year and in September 2006 it was named Eris, after the Greco-Roman goddess of strife and discord.

Eris is the ninth-most massive known object directly orbiting the Sun, and the sixteenth-most massive overall in the Solar System (including moons). It is also the largest object that has not been visited by a spacecraft.

Eris has been measured at 2,326 ± 12 kilometers (1,445 ± 7 mi) in diameter. Its mass is 0.27% that of the Earth and 127% that of dwarf planet Pluto, though Pluto is slightly larger by volume.

  • no comments

All comments are reviewed and posted only if approved.
Ammon News reserves the right to delete any comment at any time, and for any reason, and will not publish any comment containing offense or deviating from the subject at hand, or to include the names of any personalities or to stir up sectarian, sectarian or racial strife, hoping to adhere to a high level of the comments as they express The extent of the progress and culture of Ammon News' visitors, noting that the comments are expressed only by the owners.
name : *
show email
comment : *
Verification code : Refresh
write code :