Brainstorm Toys My Very Own Solar System Nightlight & E2003 My Very Own Moon, Nightlight

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What Color is the Sun?". Universe Today. Archived from the original on 25 May 2016 . Retrieved 23 May 2016.

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Standish, E. M. (April 2005). "The Astronomical Unit now". Proceedings of the International Astronomical Union. 2004: 163–179. Bibcode: 2005tvnv.conf..163S. doi: 10.1017/S1743921305001365. S2CID 55944238. Devitt, Terry (14 October 2008). "New images yield clues to seasons of Uranus". phys.org. Archived from the original on 20 November 2021 . Retrieved 20 April 2022. van Albada, T.S.; Baker, Norman (1973). "On the Two Oosterhoff Groups of Globular Clusters". The Astrophysical Journal. 185: 477–498. Bibcode: 1973ApJ...185..477V. doi: 10.1086/152434.

National Research Council, Division on Engineering and Physical Sciences; Space Studies Board, Committee on Planetary and Lunar Exploration (1990). "3. Present Understanding of the Origin of Planetary Systems". Strategy for the Detection and Study of Other Planetary Systems and Extrasolar Planetary Materials: 1990–2000. Washington D.C.: National Academies Press. pp.21–33. ISBN 978-0309041935. Archived from the original on 9 April 2022 . Retrieved 9 April 2022.

My Very Own Solar System – Brainstorm Ltd My Very Own Solar System – Brainstorm Ltd

Phillips, Tony (15 February 2001). "The Sun Does a Flip". NASA Science: Share the Science. Archived from the original on 1 April 2022 . Retrieved 1 April 2022. The Sun is composed of roughly 98% hydrogen and helium, [46] as are Jupiter and Saturn. [47] [48] A composition gradient exists in the Solar System, created by heat and light pressure from the early Sun; those objects closer to the Sun, which are more affected by heat and light pressure, are composed of elements with high melting points. Objects farther from the Sun are composed largely of materials with lower melting points. [49] The boundary in the Solar System beyond which those volatile substances could coalesce is known as the frost line, and it lies at roughly five times the Earth's distance from the Sun. [3]

Nakano, Syuichi (2001). "OAA computing section circular". Oriental Astronomical Association. Archived from the original on 21 September 2019 . Retrieved 15 May 2007. Eris (67.78AU average from the Sun) is the largest known scattered disc object, and caused a debate about what constitutes a planet, because it is 25% more massive than Pluto [180] and about the same diameter. It is the most massive of the known dwarf planets. It has one known moon, Dysnomia. Like Pluto, its orbit is highly eccentric, with a perihelion of 38.2 AU (roughly Pluto's distance from the Sun) and an aphelion of 97.6 AU, and steeply inclined to the ecliptic plane at an angle of 44°. [181] Noever, David (2004). "Modern Martian Marvels: Volcanoes?". NASA Astrobiology Magazine. Archived from the original on 14 March 2020 . Retrieved 23 July 2006. {{ cite web}}: CS1 maint: unfit URL ( link)