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NGC 6357: Cathedral to Massive Stars

By |2025-09-23T13:44:26-04:00September 23rd, 2025|Categories: NASA News, Uncategorized|Tags: , , , , , |

Photo of the Day How massive can a normal star be? Estimates made from distance, brightness and standard solar models had given one star in the open cluster Pismis 24 over 200 times the mass of our Sun, making it one of the most massive stars known. This star is the brightest object located [...]

Nebulas and Clusters in Sagittarius

By |2025-09-17T13:44:26-04:00September 17th, 2025|Categories: NASA News, Uncategorized|Tags: , , , , , |

Photo of the Day Can you spot famous celestial objects in this image? 18th-century astronomer Charles Messier cataloged only two of them: the bright Lagoon Nebula (M8) at the bottom, and the colorful Trifid Nebula (M20) at the upper right. The one on the left that resembles a cat's paw is NGC 6559, and [...]

New Comet SWAN25B over Mexico

By |2025-09-16T13:44:24-04:00September 16th, 2025|Categories: NASA News, Uncategorized|Tags: , , , , , |

Photo of the Day A newly discovered comet is already visible with binoculars. The comet, C/2025 R2 (SWAN) and nicknamed SWAN25B, is brightening significantly as it emerges from the Sun's direction and might soon become visible on your smartphone -- if not your eyes. Although the brightnesses of comets are notoriously hard to predict, [...]

Star Trails over One-Mile Radio Telescope

By |2025-09-13T13:44:30-04:00September 13th, 2025|Categories: NASA News, Uncategorized|Tags: , , , , , |

Photo of the Day The steerable 60 foot diameter dish antenna of the One-Mile Telescope at Mullard Radio Astronomy Observatory, Cambridge, UK, is pointing skyward in this evocative night-skyscape. To capture the dramatic scene, consecutive 30 second exposures were recorded over a period of 90 minutes. Combined, the exposures reveal a background of gracefully [...]

Lunar Eclipse in Two Hemispheres

By |2025-09-12T13:44:30-04:00September 12th, 2025|Categories: NASA News, Uncategorized|Tags: , , , , , |

Photo of the Day September's total lunar eclipse is tracked across night skies from both the northern and southern hemispheres of planet Earth in these two dramatic timelapse series. In the northern hemisphere sequence (top panel) the Moon’s trail arcs from the upper left to the lower right. It passes below bright planet Saturn, [...]

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