The human mind may find it difficult to conceptualize: a cosmic cloud so colossal it surrounds the Sun and eight planets as it extends trillions of miles into deep space. The spherical shell known as ...

Here, we show that the detection of Borisov implies that interstellar objects outnumber Solar system objects in the Oort cloud, whereas the reverse is true near the Sun due to the stronger ...

The Oort cloud is a region in our solar system's vicinity we don’t know all that much about. Named after Dutch astronomer Jan Oort, it is a theoretical concept comprising planetesimals (solid objects ...

Comet spotter: the object was first observed in data taken by the Dark Energy Camera in Chile, which was used for the Dark Energy Survey. (Courtesy: Reidar Hahn/Fermilab) Astronomers sifting through ...

ATLAS, the interstellar anomaly that has rivetted scientists as it hurtles through our solar system, might not be as special ...

‘Oumuamua, the first interstellar object discovered near the Earth, left us with more questions than answers. The visitor was first observed during its exit from the solar system, and the limited data ...

Celestial regions like the Oort Cloud and the main asteroid belt are characterized by vast distances between objects, with close proximity leading to unstable conditions and frequent collisions. The ...

New research may shine a light on part of outer space's great mysteries: the Oort Cloud. The Oort Cloud is the name given to a theorized group of potentially trillions of icy objects on the edge of ...

Rocky fireballs like the one that fell over Alberta, Canada last year shouldn't originate from the icy Oort Cloud... but this one apparently did. When you purchase through links on our site, we may ...

The Oort cloud, postulated in 1950 by the Dutch astronomer Jan Oort, defines the periphery of the solar system—extending out beyond 100,000 times the Earth-sun separation. It contains billions of icy ...