Comets

How To Track Comet Leonard With Online Maps And Live-position Tools

It will come within a mere 21 million miles of us on December 12. Comet Leonard—the biggest and brightest comet you’ll see all year—is headed to Earth. Well, relatively speaking: The celestial object has spent the past 35,000...
Related topics: Space

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Did The Earth’s Water Come From The Sun?

Where did Earth’s water come from? Comets may have brought some of it. Asteroids may have brought some. Icy planetesimals may have played a role by crashing into the young Earth and depositing their water. Hydrogen from inside the Earth may...
Related topics: Sun, Space, Asteroids, Hydrogen

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Ariana Grande & Kid Cudi – “just Look Up”

Adam McKay’s new movie Don’t Look Up is a climate change satire about two astronomers who discover a planet-destroying comet on a direct collision course with Earth and try desperately to warn an uncaring government and a complacent...
Related topics: Space, Scientific Discoveries

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We've Seen Things You People Wouldn't Believe. Mega-comets Lurking In Solar Systems, Spewing Carbon...

Comet BB is not only largest of its type that we know of, it was likely active billions of miles from the Sun Not only is comet Bernardinelli-Bernstein the largest of its kind known, it’s also one of the most active, distant comets, likely spewing...
Related topics: Space, Sun

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New Study Shows The Largest Comet Ever Observed Was Active At Near-record Distance

A new study by University of Maryland astronomers shows that comet Bernardinelli-Bernstein (BB), the largest comet ever discovered, was active long before previously thought, meaning the ice within it is vaporizing and forming an envelope of dust...
Related topics: Space, Scientific Discoveries

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New Findings About Ions Around Comets

Sofia Bergman, Swedish Institute of Space Physics (IRF) and Umeå University, will defend her doctoral thesis on low-energy ions around comet 67P/Churyumov-Gerasimenko on 26 November. Observing low energy ions is notoriously difficult because their...
Related topics: Space, Physics

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Not Saying It Was Aliens, But 'oumuamua Probably Wasn't A Nitrogen Iceberg

On October 19, 2017, astronomers made the first-ever detection of an interstellar object (ISO) passing through our solar system. Designated 1I/2017 U1 ′Oumuamua, this object confounded astronomers who could not determine if it was an interstellar...
Related topics: Icebergs, Space

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Near-earth Asteroids Could Supply Future Meteor Showers

Most meteor showers are associated with comets, but asteroid-driven showers might be more common than previously thought.
Related topics: Asteroids, Meteor, Space

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Mysterious Patches Of Glass Scattered Across The Chilean Desert Are Likely The Products Of An...

Clusters of glass slabs scattered across the top of a small mound at the Puquio de Nuñez site in northern Chile. Schultz et al., Geology, 2021 Scientists found strange patches of black and green glass in the Chilean desert. A new study attributes...
Related topics: Space, Geology

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Laboratory Will Illuminate Formation, Composition, Activity Of Comets

Researchers have developed a laboratory to simulate comets in space-like conditions. The goal of the Comet Physics Laboratory is to understand the internal structure of comets, as well as how their constituent materials form and react. Many of the...
Related topics: Space, Physics

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Mysterious Comet Has Been Having Multiple Large Outbursts

Amateur and professional astronomers have found that the comet 29P/Schwassmann-Wachmann has been experiencing an unusually large outburst recently. Normally, it has little outbursts spread throughout the year.
Related topics: Space

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Vast Patches Of Glassy Rock In Chilean Desert Likely Created By Ancient Exploding Comet

Around 12,000 years ago, something scorched a vast swath of the Atacama Desert in Chile with heat so intense that it turned the sandy soil into widespread slabs of silicate glass. Now, a research team studying the distribution and composition of...
Related topics: Space

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Proposed Centaur Mission Could Catch Comets In The Act Of Formation

From Mercury to the depths of the distant Kuiper Belt, there aren't many unexplored corners of the solar system out there. One class of object, however, remains to be visited: the transitional Centaurs out beyond the orbit of Jupiter. Now, a new...
Related topics: Space, Kuiper Belt, Jupiter

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How Asteroid, Comet Strikes May Have Delayed Evolution Of Atmosphere

Between 2.5 and 4 billion years ago, a time known as the Archean eon, Earth’s weather could often be described as cloudy with a chance of asteroid. Back then, it was not uncommon for asteroids or comets to hit Earth. In fact, the largest ones,...
Related topics: Asteroids, Space

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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 the Sun in 2031. However,...
Related topics: Space, Saturn, Scientific Discoveries, Sun

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To Watch A Comet Form, A Spacecraft Could Tag Along For A Journey Toward The Sun

A new article proposes that space probes could hitch a ride with 'centaurs' as they become comets. Along the way, the spacecraft would gather data that would otherwise be impossible to record -- including how comets, Earth-like planets, and even the...
Related topics: Space, Spacecrafts, Sun

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We're One Step Closer To Uncovering Secrets Of Ancient 'centaur' Comets

Comets are a frequent and gorgeous occurrence in outer space, and a study recently outlined plans for how scientists could watch them be created in real-time. As it's been proven time and time again, the mysteries of space are continually...
Related topics: Space

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Planetary Defense Is Good--but Is Planetary Offense Better?

A new approach could mitigate the most damaging effects of an imminent asteroid or comet strike—or ensure many threatening objects never get close to striking Earth in the first place -- Read more on ScientificAmerican.com
Related topics: Asteroids, Space

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To Watch A Comet Form, A Spacecraft Could Tag Along For A Journey Toward The Sun

Deep in the solar system, between Jupiter and Neptune, lurk thousands of small chunks of ice and rock. Occasionally, one of them will bump into Jupiter's orbit, get caught and flung into the inner solar system—towards the sun, and us.
Related topics: Space, Spacecrafts, Sun, Jupiter, Neptune

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Neil Degrasse Tyson Explains Why Blowing Up The Comet Heading For Earth Is A Terrible Idea

Dr. Neil deGrasse Tyson explained to CNN that the films "Deep Impact" and "Armageddon" came up with terrible ideas for salving the comet and asteroid crisis that the Earth is facing. Both films deal with a massive body headed toward Earth that...
Related topics: Neil DeGrasse Tyson, Space, CNN, Asteroids

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