When the distant planetoid Sedna was discovered on the outer edges of our solar system, it posed a puzzle to scientists. Sedna appeared to be spinning very slowly compared to most solar system objects ...

Sedna, the Solar System's farthest known object, does not have a moon, puzzled astronomers have revealed. Its slow spin was thought to be due to the gravity of a small, companion body. Researchers ...

It is truly a far-reaching debate: does Sedna, the most distant object ever discovered in our Solar System, have a moon? And if it does, why haven't we seen it yet? A group of British astronomers has ...

Sedna was initially observed to possess an unusually slow rotation period of 20 days, leading astronomers to hypothesize the presence of an unseen companion moon responsible for this sluggish rotation ...

Strange planetoid Sedna, the most distant object in the solar system, was supposed to have a companion moon but the Hubble Space Telescope could not find it, scientists have said. Astronomers who ...

The mystery surrounding Sedna – the most distant object ever seen in the Solar System – deepened as astronomers calculated that the planetoid’s “missing” moon must belong to an entirely new class of ...

The astronomers who discovered Sedna were so certain that a satellite accompanied the object that when they announced its existence, they released an artist’s rendition of the supposed moon. It ...

Astronomers studying 35 NASA Hubble Space Telescope (HST) images of the solar system's farthest known object, unofficially named Sedna, are surprised the object does not appear to have a companion ...

It is truly a far-reaching debate: does Sedna, the most distant object ever discovered in our Solar System, have a moon? And if it does, why haven't we seen it yet? A group of British astronomers has ...

THE mystery surrounding Sedna – the most distant object ever seen in the solar system – deepened as astronomers calculated that the planetoid’s “missing” moon must belong to an entirely new class of ...