Search results for Oort cloud

Astronomy Nov 29, 2021

Comet A1 Leonard brightens in December

Now is the time to start tracking Comet C/2021 A1 Leonard, as it starts its dawn dive sunward.

Astronomy Oct 15, 2021

The biggest comet ever seen will get as close as Saturn in 2031

A mega-comet—potentially the largest ever discovered—is heading from the Oort Cloud towards our direction. Estimated to be 100–200 kilometers across, the unusual celestial wanderer will make its closest approach to ...

Astronomy Sep 15, 2021

All is quiet among newly studied Centaurs

Often, the squeaky wheel, or at least the shiniest object, seems to get all the attention. In a new study led by PSI Research Scientist Eva Lilly, it is the inactive Centaurs that take center stage and illuminate why other ...

Astronomy Sep 10, 2021

Protoplanetary disks throw out more material than gets turned into planets

When a young solar system gets going it's little more than a young star and a rotating disk of debris. Accepted thinking says that the swirling debris is swept up in planet formation. But a new study says that much of the ...

Astronomy Aug 23, 2021

Interstellar comets like Borisov may not be all that rare

In 2019, astronomers spotted something incredible in our backyard: a rogue comet from another star system. Named Borisov, the icy snowball traveled 110,000 miles per hour and marked the first and only interstellar comet ever ...

Space Exploration Jun 28, 2021

Giant comet found in outer solar system by Dark Energy Survey

A giant comet from the outskirts of our solar system has been discovered in six years of data from the Dark Energy Survey. Comet Bernardinelli-Bernstein is estimated to be about 1000 times more massive than a typical comet, ...

Space Exploration Jun 22, 2021

Space object with orbit stretching into the Oort cloud discovered

Astronomers Pedro Bernardinelli and Gary Bernstein discovered a space object recently that has an orbit around the sun and also stretches into the Oort cloud—they have named it 2014 UN271. The researchers made the discovery ...

Astronomy Jun 03, 2021

Astronomers calculate genesis of Oort cloud in chronological order

A team of Leiden astronomers has managed to calculate the first 100 million years of the history of the Oort cloud in its entirety. Until now, only parts of the history had been studied separately. The cloud, with roughly ...

Astronomy Apr 09, 2021

What are the best ways to search for technosignatures?

The search for extraterrestrial intelligence (SETI) has long roots in human history. With the advent of modern technologies, scientists were finally able to start scanning the skies for any sign of life. When the search ...

Planetary Sciences Mar 05, 2021

Comet Catalina suggests comets delivered carbon to rocky planets

In early 2016, an icy visitor from the edge of our solar system hurtled past Earth. It briefly became visible to stargazers as Comet Catalina before it slingshotted past the Sun to disappear forevermore out of the solar system.

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