Mmastodon LifeEducation first seen 23 h ago, last 18 h ago, peak #2

Complete Sharpless Catalog of 313 Nebulae Featured

Original: 2026 September 30 The Complete Sharpless Catalog: 313 Nebulae * Image Credit: Bing Xin * Text: Keighley Rockcliffe (NASA

NASA's Astronomy Picture of the Day for September 30, 2026 presents the complete Sharpless Catalog, showcasing all 313 nebulae catalogued by astronomer Stewart Sharpless in the 1950s. The image is credited to astrophotographer Bing Xin, with accompanying text by Keighley Rockcliffe of NASA's Goddard Space Flight Center. Space enthusiasts are sharing the composite, which highlights how amateur astrophotographers can now capture hundreds of deep-sky objects in a single project.

Why now: The rare feat of imaging all 313 Sharpless nebulae in one presentation is drawing attention from astronomy and astrophotography communities.

NASASharpless CatalogBing XinKeighley RockcliffeStewart Sharpless

Open on mastodon →

Rank over time, top of the chart is #1. 11 snapshots from 23 h ago to 18 h ago.

Evidence

• 2026 September 30 The Complete Sharpless Catalog: 313 Nebulae * Image Credit: Bing Xin * Text: Keighley Rockcliffe (NASA GSFC, UMBC CSST, CRESST II) https:// kerockcliffe.com/ Explanation: What does it take to image hundreds of nebulae? Today’s image contains the entire… · grobi@defcon.social · 5

API: https://socialmediatrends-api.osmike.com/v1/trends/346553