APOD on Nostr: **Astronomy Picture of the Day** 29 March 2025 **Stereo Helene** *Image creditor ...
**Astronomy Picture of the Day**
29 March 2025
**Stereo Helene**
*Image creditor details unavailable via API. Visit linked page below for full info.*
Get out your red/blue glasses and float next to Helene, small, icy moon of Saturn. Appropriately named, Helene is a Trojan moon, so called because it orbits at a Lagrange point. A Lagrange point is a gravitationally stable position near two massive bodies, in this case Saturn and larger moon Dione. In fact, irregularly shaped ( about 36 by 32 by 30 kilometers) Helene orbits at Dione's leading Lagrange point while brotherly ice moon Polydeuces follows at Dione's trailing Lagrange point. The sharp stereo anaglyph was constructed from two Cassini images captured during a close flyby in 2011. It shows part of the Saturn-facing hemisphere of Helene mottled with craters and gully-like features.
#APOD #Stellar #SpaceFacts #SpaceAdventures #SpaceDiscovery
https://apod.nasa.gov/apod/ap250329.htmlPublished at
2025-03-29 04:10:05 GMTEvent JSON
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"content": "**Astronomy Picture of the Day**\n\n29 March 2025\n\n**Stereo Helene**\n\nhttps://apod.nasa.gov/apod/image/2503/N00172886_92_beltramini.jpg\n\n*Image creditor details unavailable via API. Visit linked page below for full info.*\n\nGet out your red/blue glasses and float next to Helene, small, icy moon of Saturn. Appropriately named, Helene is a Trojan moon, so called because it orbits at a Lagrange point. A Lagrange point is a gravitationally stable position near two massive bodies, in this case Saturn and larger moon Dione. In fact, irregularly shaped ( about 36 by 32 by 30 kilometers) Helene orbits at Dione's leading Lagrange point while brotherly ice moon Polydeuces follows at Dione's trailing Lagrange point. The sharp stereo anaglyph was constructed from two Cassini images captured during a close flyby in 2011. It shows part of the Saturn-facing hemisphere of Helene mottled with craters and gully-like features.\n\n#APOD #Stellar #SpaceFacts #SpaceAdventures #SpaceDiscovery\n\nhttps://apod.nasa.gov/apod/ap250329.html\n",
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