Kuiper belt

New models suggest that Pluto and Charon were formed by a giant collision. This composite of enhanced color images of Pluto (lower right) and Charon (upper left) was taken by the New Horizons spacecraft as it passed through the Pluto system in 2015. Pluto and Charon are shown at approximately their relative sizes, but their true separation is not at the correct distance. Credit: NASA/JHUAPL/SwRI

How Pluto and its moon Charon were formed from a giant collision

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New research reveals that Pluto and its large moon Charon formed from a unique "kiss and capture" process following a giant collision, with significant implications for understanding the solar system.
Many objects have been discovered at the edge of the solar system. Figure: Avi Blizovsky using FLEX-1

Astronomers discover mysterious new objects beyond the edge of the solar system

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Observations made with the Subaru Telescope in Hawaii have revealed new objects in the outer region of the Solar System, pointing to a large, unknown population beyond the Kuiper Belt.
A spectacular sunset over an observatory in a sky full of colorful clouds.

An unexpected discovery of new celestial bodies in the outer solar system amazes astronomers

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thanks for the correction. The corrected translation would be: SwRI scientists used data from the James Webb Space Telescope to model the geothermal processes in the subsurface that may explain how methane reached the surface of Eris and Maki Maki, two dwarf planets in the distant Kuiper Belt. The figure suggests three possibilities, including the likelihood that liquid water exists within these icy bodies at the edge of the solar system, far from the sun's heat. Credit: Southwest Research Institute.

Astronomers reveal surprising activity on the dwarf planets Eris and Maki Maki

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The Webb telescope has observed what appear to be young methane deposits on the surface of Eris and Maki Maki
Close-up of Arrokoth by New Horizons. You can see that the "snowman" consists of two separate objects connected by a thin neck. An accidental collision of two such objects would shatter them rather than join them; The new study explains how the said connection was made. Photo courtesy of NASA

The birth of the "snowman" at the edge of the solar system

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A short passage that should reveal an unknown celestial gram. New Horizons visualization near Thule Ultima (not to scale) | Source: NASA

Three and a half years after Pluto, New Horizons flew past Thule Ultima in the Kuiper belt

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Dwarf Planet Candidate 2015 RR245 is in a fairly distant orbit, but is one of the few dwarf planets that can be visited by the New Horizons spacecraft. . Alex Parker/OSSOS, CC BY-SA

840 dwarf planets discovered beyond Neptune-Rahab - and what they can tell us

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Visualization of the planetary ring surrounding the football-shaped dwarf planet, the Omiya. Source: IAA-CSIC/UHU.

A planetary ring has been discovered around the Umi dwarf planet

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Didi, a distant object in the solar system with an estimated diameter of 635 km and is 3 times more distant than Pluto. Image: ALMA

Meet Didi, a distant and dim planetary body in our solar system

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A diagram showing all the round bodies in the solar system with a diameter of less than 10,000 km. If the researchers' proposal is accepted, at least 110 bodies in the solar system will be defined as planets. Source: Montage by Emily Lakdawalla. Data from NASA / JPL, JHUAPL/SwRI , SSI, and UCLA / MPS / DLR / IDA, processed by Gordan Ugarkovic, Ted Stryk, Bjorn Jonsson, Roman Tkachenko, and Emily Lakdawalla.

Why does a group of researchers want to reopen the debate on the definition of planets?

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Pluto in a photograph with artificial color designed to highlight differences in its surface, taken by New Horizons on July 14, 2015. Source: NASA.

Pluto - summary of findings, part four

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An artist's illustration of a possible ninth planet in our solar system. Illustration: Robert Hart, Clatech

Is the strange inclination of the sun caused by the influence of the ninth planet?

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Artist's illustration of the landscape on the dwarf planet Sedna. David Gerdes of the University of Michigan says the surface of 2014 UZ224 will look similar.

A new dwarf planet has been discovered at the edge of the solar system

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The largest dwarf planets at the edge of the solar system. Source: Konkoly Observatory/András Pál, Hungarian Astronomical Association/Iván Éder, NASA/JHUAPL/SwRI

Is the largest world in the solar system that doesn't yet have a name about to finally get one?

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This artist's illustration shows the possible appearance of the ninth planet from the Sun, which is likely to be composed mostly of gases similar to Uranus and Neptune. Hypothetical lightning illuminates the night side. Illustration: Caltech

Indirect evidence for the existence of a ninth planet: a gas giant that orbits the Sun once every ten thousand years

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A crater scarred by meteorite impacts that allow a glimpse of what's going on under the ground. Photo: NASA's New Horizons spacecraft

NASA has released spectacular close-up photos of Pluto

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The brave new worlds Pluto and Charon are in the focus of the field of view of the LORRI camera on the New Horizons spacecraft. Photo: NASA TV

New Horizons revealed: Pluto's diameter is 2,370 km

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Did they come from one source? The surface of Pluto and in the background its large moon, Charon. Image: NASA

Pluto - a point of light in the darkness

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Discoverer of Pluto, the girl who gave him his name and the actor Leonard Nimoy will be commemorated on Pluto and Charon

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The New Horizons spacecraft hovers above Pluto and its large moon Charon. Artist illustration: NASA

Pluto and beyond / Michael D. Lemonique

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Two objects with comet-like orbits passed through the solar system in 2013 and 2014, but showed no activity. On the left is C/2013 P2 Pan-STARRS and on the right is C/2014 S3 Pan-STARRS. Photo: Institute of Astronomy, University of Hawaii.

"Naked" comets may reveal the secret of the origin of the solar system

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An artist's impression of the surface of Maki-Maki, a dwarf planet whose orbit is far from that of Pluto. (ESO/L. Calçada/Nick Risinger)

The mysteries of the disappearing atmosphere of Maki-Maki

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The orbit of the Voyager 2 spacecraft. The interstellar cloud location is marked with yellow lines. Illustration: American Museum of Natural History

What holds the interstellar cloud in place? The mystery is solved

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

2012: There Is No Planet X (Nibiru)

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Climate change also on Eris

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A new body in the solar system has been named: the Umeya dwarf planet

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A workshop was probably formed far beyond Pluto

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A special moon joins the workshop

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Another body will be discovered in the Kuiper belt - the size of Pluto * requirement to be cataloged as a planet

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A body half the diameter of Pluto was discovered at the edge of the solar system * Gadol Mikve-Var (2002)

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A spacecraft flight to Pluto has been approved - New Horizon will be launched in 2006 and will arrive in 2015

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The largest body since the discovery of Pluto in 1930 was discovered * Kva-Var orbits the Sun in a circle

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Tenth planet or just another Pluto

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A planet beyond Pluto - may be much larger than Jupiter

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The scientist - archive: 19.5 billion km from the sun

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

19.5 billion km from the sun

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