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The Prague Jewish quarter of Josefov is a few minutes’ walk away up, a fashionable shopping street. The Prague Jewish Museum includes several synagogues and the beautiful Old Jewish Cemetery. Esposito, Larry W. (2002-01-01). "Planetary rings". Reports on Progress in Physics. 65 (12): 1741–1783. Bibcode: 2002RPPh...65.1741E. doi: 10.1088/0034-4885/65/12/201. ISSN 0034-4885. S2CID 250909885.

The Latin word ‘Occasus’ on the right-hand side of the blue section means ‘sunset’. The word ‘crepusculum’ below this in the red section means ‘twilight’. Collection" . https://www.britishmuseum.org/research/collection_online/collection_object_details/collection_image_gallery.aspx?partid=1&assetid=494614&objectid=55055. text{angular resolution } = \frac{206,265 \text{ arcsec} \times 10}{1.4 \times 10 In 2017, scientists discovered a ring around dwarf planet Haumea, which is located in the Kuiper Belt beyond Neptune’s orbit. A Planetary Society Shoemaker Grant winner helped make the discovery.This ring is sometimes engraved with the months on one side and corresponding zodiac signs on the outside; very similar to an astrolabe.

Fainter planetary rings can form as a result of meteoroid impacts with moons orbiting around the planet or, in case of Saturn's E-ring, the ejecta of cryovolcanic material. [5] [6] Discovery and exploration: Neptune hinted to astronomers that it might have rings during a stellar occultation in 1984. Proof came in 1989, when Voyager 2 captured definitive images of the icy world’s rings. Like Uranus, Neptune’s rings can now be studied with ground and space-based telescopes, although Neptune’s farther distance from the Sun makes studying its rings more of a challenge. a b Smith, Bradford A.; Soderblom, Laurence A.; Johnson, Torrence V.; Ingersoll, Andrew P.; Collins, Stewart A.; Shoemaker, Eugene M.; Hunt, G. E.; Masursky, Harold; Carr, Michael H. (1979-06-01). "The Jupiter System Through the Eyes of Voyager 1". Science. 204 (4396): 951–972. Bibcode: 1979Sci...204..951S. doi: 10.1126/science.204.4396.951. ISSN 0036-8075. PMID 17800430. S2CID 33147728.Gratton, R.; etal. (June 2020). "Searching for the near-infrared counterpart of Proxima c using multi-epoch high-contrast SPHERE data at VLT". Astronomy & Astrophysics. 638: A120. arXiv: 2004.06685. Bibcode: 2020A&A...638A.120G. doi: 10.1051/0004-6361/202037594. S2CID 215754278.

Hyodo, R.; Charnoz, S.; Genda, H.; Ohtsuki, K. (2016-08-29). "Formation of Centaurs' Rings Through Their Partial Tidal Disruption During Planetary Encounters". The Astrophysical Journal. 828 (1): L8. arXiv: 1608.03509. Bibcode: 2016ApJ...828L...8H. doi: 10.3847/2041-8205/828/1/L8. S2CID 119247768. A ring system is a disc or ring, orbiting an astronomical object, that is composed of solid material such as dust and moonlets, and is a common component of satellite systems around giant planets like Saturn. A ring system around a planet is also known as a planetary ring system. [1] Tiscareno, Matthew S. (2013-01-01). "Planetary Rings". In Oswalt, Terry D.; French, Linda M.; Kalas, Paul (eds.). Planets, Stars and Stellar Systems. Springer Netherlands. pp.309–375. arXiv: 1112.3305. doi: 10.1007/978-94-007-5606-9_7. ISBN 9789400756052. S2CID 118494597.

Reports in March 2008 [20] [21] [22] suggested that Saturn's moon Rhea may have its own tenuous ring system, which would make it the only moon known to have a ring system. A later study published in 2010 revealed that imaging of Rhea by the Cassini spacecraft was inconsistent with the predicted properties of the rings, suggesting that some other mechanism is responsible for the magnetic effects that had led to the ring hypothesis. [23] Structure: Jupiter’s rings are divided into four main sections. Starting at the planet is a donut-shaped halo ring, the main ring, and two faint gossamer rings named Amalthea and Thebe. The Thebe ring also has a faint extension. Gáspár, András; Rieke, George H. (April 20, 2020). "New HST data and modeling reveal a massive planetesimal collision around Fomalhaut". PNAS. 117 (18): 9712–9722. arXiv: 2004.08736. Bibcode: 2020PNAS..117.9712G. doi: 10.1073/pnas.1912506117. PMC 7211925. PMID 32312810. S2CID 215827666.

Surprise! Asteroid Hosts A Two-Ring Circus Above Its Surface". Universe Today. March 2014. Archived from the original on 2014-03-30.Morgado, B. E.; etal. (2023). "A dense ring of the trans-Neptunian object Quaoar outside its Roche limit". Nature. 614 (7947): 239–243. Bibcode: 2023Natur.614..239M. doi: 10.1038/s41586-022-05629-6. hdl: 10023/27188. PMID 36755175. S2CID 256667345.