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New Dwarf Planet Found in the Outskirts of the Solar System. More Ammunition to Search for Planet 9

October 4, 2018

Astronomers have found a new dwarf planet way out beyond Pluto that never gets closer than 65 AUs…
Oort Clouds Around Other Stars Should be Visible in the Cosmic Microwave Background

August 16, 2018

For decades, scientists have theorized that beyond the edge of the Solar System, at a distance of up…
70,000 Years Ago a Nearby Star Messed With the Orbits Of Comets and Asteroids in our Solar System

March 23, 2018

70,000 years ago, our keen-eyed ancestors may have noticed something in the sky: a red dwarf star that…
Large, Distant Comets More Common Than Previously Thought

July 25, 2017

Comets that take more than 200 years to make one revolution around the Sun are notoriously difficult to…
Update: Space-Earth System Produces Highest-Resolution Astronomical Image

January 28, 2016

Using an orbiting radio-astronomy satellite combined with 15 ground-based radio telescopes, astronomers have made the highest-resolution, or most-detailed,…
Scientists find link between comet and asteroid showers & mass extinctions

October 21, 2015

Mass extinctions occurring over the past 260 million years were likely caused by comet and asteroid showers, scientists…
What is the Oort Cloud?

August 11, 2015

For thousands of years, astronomers have watched comets travel close to Earth and light up the night sky.…
A Star Passed Through the Solar System Just 70,000 Years Ago

February 19, 2015

Astronomers have reported the discovery of a star that passed within the outer reaches of our Solar System…
Flyby of a star: A close call of 0.8 light years

February 18, 2015

A group of astronomers from the US, Europe, Chile and South Africa have determined that 70,000 years ago…
‘Naked’ Comets Could Expose Solar System’s Ancient Origin Story

November 13, 2014

What’s a comet that doesn’t look like a comet? The question sounds contradictory, but astronomers believe these objects…
First Surface Observations of Oort Cloud Objects

November 12, 2014

Astronomers announced last week the discovery of two unusual objects in comet-like orbits that originate in the Oort cloud…
Update: Solar System’s Edge Redefined; another enormous planet may be present

March 27, 2014

The Solar System has a new most-distant member, bringing its outer frontier into focus. New work from Carnegie’s…
Solar System’s Edge Redefined

March 27, 2014

The solar system has a new most-distant family member. Scientists using ground based observatories have discovered an object…
Mysterious and Well-Preserved Oort Cloud Object Heading Into Our Solar System

May 29, 2013

What if we could journey to the outer edge of the Solar System – beyond the familiar rocky…
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