Ceres

Cosma / Communication / Knowledge / Realm / Physical / Universe / Solar System / Asteroid Belt / Ceres
—————————

Ceres (minor-planet designation: 1 Ceres) is a dwarf planet in the asteroid belt between the orbits of Mars and Jupiter. Originally considered a planet, it was reclassified as an asteroid in the 1850s after the discovery of dozens of other objects in similar orbits. In 2006, it was reclassified again as a dwarf planet – the only one always inside Neptune’s orbit – because, at 940 km (580 mi) in diameter, it is the only asteroid large enough for its gravity to maintain it as a spheroid in hydrostatic equilibrium. — Wikipedia

Ceres (Encyclopædia Britannica)
Ceres (COSMOS: The SAO Encyclopedia of Astronomy)

———————–

Inspiration

Note: This is a 360° Video — press and hold to explore it!

NASA Jet Propulsion Laboratory (YouTube Channel)
NASA Jet Propulsion Laboratory (Official Website)

Solar System Treks are online, browser-based portals that allow you to visualize, explore, and analyze the surfaces of other worlds using real data returned from a growing fleet of spacecraft. You can view the worlds through the eyes of many different instruments, pilot real-time 3D flyovers above mountains and into craters, and conduct measurements of surface features. Ceres Trek is a portal for exploration of Ceres, the largest asteroid in the Solar System. This portal showcases data collected by NASA Dawn spacecraft which was launched in 2007. — Ceres Trek (Solar System Treks, NASA)

Ceres Trek (Solar System Treks, NASA)

———————-

Innovation

Science

Dawn was launched by NASA in September 2007 with the mission of studying two of the three known protoplanets of the asteroid belt: Vesta and Ceres. Dawn entered orbit around Ceres on March 6, 2015. In 2017, NASA announced that the nine-year mission would be extended until the probe’s hydrazine fuel supply was depleted. On November 1, 2018, NASA announced that Dawn depleted its hydrazine and the mission was ended. The spacecraft is currently in a derelict, but stable, orbit around Ceres. — Wikipedia

NASA Jet Propulsion Laboratory (YouTube Channel)
NASA Jet Propulsion Laboratory (Official Website)

Dawn (NASA Jet Propulsion Laboratory, YouTube Playlist)

Ceres (NASA Science)

Ceres (Minor Planet Center, International Astronomical Union)

Ceres (Wolfram Alpha)
Minor Planets (Wolfram Alpha)

————————–

Preservation

History

In 1596, Johannes Kepler wrote, “Between Mars and Jupiter, I place a planet,” in his Mysterium Cosmographicum, stating his prediction that a planet would be found there. While analyzing Tycho Brahe’s data, Kepler thought that too large a gap existed between the orbits of Mars and Jupiter to fit Kepler’s then-current model of where planetary orbits should be found.

In an anonymous footnote to his 1766 translation of Charles Bonnet’s Contemplation de la Nature, the astronomer Johann Daniel Titius of Wittenberg noted an apparent pattern in the layout of the planets, now known as the Titius-Bode Law. If one began a numerical sequence at 0, then included 3, 6, 12, 24, 48, etc., doubling each time, and added four to each number and divided by 10, this produced a remarkably close approximation to the radii of the orbits of the known planets as measured in astronomical units, provided one allowed for a “missing planet” (equivalent to 24 in the sequence) between the orbits of Mars and Jupiter.

When William Herschel discovered Uranus in 1781, the planet’s orbit matched the law almost perfectly, leading astronomers to conclude that a planet had to be between the orbits of Mars and Jupiter.

On January 1, 1801, Giuseppe Piazzi, chairman of astronomy at the University of Palermo, Sicily, found a tiny moving object in an orbit with exactly the radius predicted by this pattern. He dubbed it “Ceres”, after the Roman goddess of the harvest and patron of Sicily. Piazzi initially believed it to be a comet, but its lack of a coma suggested it was a planet. Thus, the aforementioned pattern predicted the semimajor axes of all eight planets of the time (Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, and Uranus). — Wikipedia

TED-Ed (YouTube Channel)
TED-Ed (Official Website)

The First Asteroid Ever Discovered (Carrie Nugent, TED-Ed)

Asteroids: The Discovery of Asteroids (European Space Agency)

Ceres: Exploration (NASA Science)

Library

DDC: 523.43 Ceres (Library Thing)

Subject: Ceres (Open Library)

LCC: QB 651 Ceres (Library of Congress)
Subject: Ceres (Library of Congress)

Subject: Ceres (WorldCat)

—————————

Participation

Education

Ceres – Level 1 (StarChild, Goddard Space Flight Center, NASA)
Ceres – Level 2 (StarChild, Goddard Space Flight Center, NASA)

Small Solar System Bodies Learning Resources (National Air and Space Museum)
Dwarf Planets Learning Resources (National Air and Space Museum)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

Organization

Minor Planet Center (International Astronomical Union)
Asteroids & Remote Planets Section (British Astronomical Association)

News

Ceres (Nova Research Highlights, American Astronomical Society)
Ceres (EurekaAlert, AAAS)
Ceres (Astronomy Magazine)
Dwarf Planet Ceres (JSTOR)

Ceres (Science Daily)
Ceres (Phys.org)

Recent News from Phys.org …

Habitable zone planets around red dwarfs aren't...
on November 10, 2025 at 8:54 pm
There are no confirmed exomoons, moons orbiting distant exoplanets in other solar systems. There are a few candidates, but none have passed the threshold and been accepted as confirmed. But they must exist. Moons are common in our solar system, so it would be extremely weird if they didn't exist elsewhere.
Methane gas found on dwarf planet Makemake
on September 9, 2025 at 5:29 pm
A Southwest Research Institute-led team has reported the first detection of gas on the distant dwarf planet Makemake, using NASA's James Webb Space Telescope (JWST). This discovery makes Makemake only the second trans-Neptunian object, after Pluto, where the presence of gas has been confirmed. The gas was identified as methane.
Ceres may have had long-standing energy to fuel...
on August 20, 2025 at 8:56 pm
New NASA research has found that Ceres may have had a lasting source of chemical energy: the right types of molecules needed to fuel some microbial metabolisms. Although there is no evidence that microorganisms ever existed on Ceres, the finding supports theories that this intriguing dwarf planet, which is the largest body in the main asteroid belt between Mars and Jupiter, may have once had conditions suitable to support single-celled lifeforms.
Flyby mission strategies for detecting oceans on...
on June 27, 2025 at 3:54 pm
What methods can be used to identify subsurface oceans on the five largest moons of Uranus: Ariel, Umbriel, Titania and Oberon, and Miranda? This is what a recent study presented at the 56th Lunar and Planetary Science Conference (LPSC 2025) hopes to address as a team of scientists from NASA's Jet Propulsion Laboratory (JPL) investigated potentially using radio science on the Uranus Orbiter and Probe (UOP) concept mission, which was designated as a high priority Flagship-class mission by the […]
Traveling to Mars and Ceres using Lunar Gateway...
on June 2, 2025 at 7:14 pm
How can humanity use the developing Lunar Gateway as an appropriate starting point for advancing human space exploration beyond the moon? This is what a recent study presented at the 56th Lunar and Planetary Science Conference (LPSC 2025) hopes to address as a team of researchers evaluated a myriad of ways that Lunar Gateway could be used as a testbed for future technologies involving sending humans to Mars and Ceres.