#PPOD: NASA's SPHEREx space telescope has turned its infrared eyes toward 37 nearby brown dwarfs, revealing a remarkable diversity of objects that bridge the gap between stars and giant planets. Brown dwarfs form much like stars but lack the mass needed to sustain hydrogen fusion in their cores. 🧪 🔭

#PPOD: Stars trace luminous arcs across the sky above Earth in this long-duration photograph captured from the ISS on September 20, 2026. The station passed over Indonesia, where blue lights from fishing boats and yellow lights from cities illuminate the darkness below. Credit: NASA/Anil Menon 🧪 🔭

#PPOD: More than a century after the first photographs of the Orion Nebula, NASA's Hubble Space Telescope revealed something extraordinary in this familiar stellar nursery: young stars surrounded by gas and dust disks. 🧪 🔭

#PPOD: The Milky Way stretches across the night sky above ESO's La Silla Observatory in Chile's Atacama Desert, framed by two of the observatory's telescopes. The brilliant star clouds and dark lanes of interstellar dust reveal our galaxy's rich structure... 🧪 🔭

#PPOD: The first light of morning illuminates the rugged slopes of Mount Sharp in this panorama captured by NASA's Curiosity rover on August 11, 2026. The image reveals a striking landscape of distant cliffs and ridges beneath the cool, bluish tones of the Martian dawn. 🧪 👩‍🔬

#PPOD: Galaxies warp, stretch, and multiply across this view from NASA’s JWST. The golden galaxies belong to the massive galaxy cluster MACS J0454.1-0300, seen as it was about 8 billion years ago. The cluster’s enormous gravity bends spacetime and distorts light... 🧪 🔭

#PPOD: These strange, intricately eroded deposits in Mars’s Arabia Terra region preserve a record of the planet’s ancient climate. Captured by the HiRISE camera aboard NASA’s Mars Reconnaissance Orbiter, the light-toned layers have similar thicknesses and brightness... 🧪 🔭

#PPOD: Just three years after Henry Draper captured the first photograph of the Orion Nebula, British amateur astronomer Andrew Ainslie Common transformed what photography could reveal about the night sky. On February 26, 1883, Common exposed a photographic plate for 60 minutes... 🧪 🔭

#PPOD: Earth fills the view as ESA’s Juice spacecraft looks back at our planet during a flyby on September 28, 2026. Africa and Madagascar are visible across the sunlit globe, while the Moon appears as a tiny point in the distance. One of Juice’s monitoring cameras captured the image... 🧪 🔭

#PPOD: ESA’s Smile mission has captured its first ultraviolet image of Earth’s northern aurora, revealing the glowing oval during an auroral substorm. Smile’s Ultraviolet Imager captured the image, observing ultraviolet light produced when energetic particles... 🧪 🔭

#PPOD: A large new scar has appeared on the Moon. McGetchin crater formed sometime between April 11 and May 22, 2024, when an asteroid or comet roughly the size of a multi-story building slammed into the lunar surface. 🧪 🔭 🌕️

#PPOD: Dark dunes sweep across the floor of Schaeberle Crater in this HiRISE image from NASA’s Mars Reconnaissance Orbiter. Nearly 159 kilometers across, Schaeberle is a large impact crater in the southern hemisphere of Mars whose floor preserves evidence of very different periods... 🧪 🔭

#PPOD: On September 30, 1880, American astronomer Henry Draper captured the first photograph of the Orion Nebula, marking an important milestone in the history of astrophotography. Using an 11-inch Alvan Clark refractor and the relatively new dry-plate photographic process... 🧪 🔭

#PPOD: The Venetian Lagoon spreads across Italy’s Adriatic coast in this striking satellite view, with the historic city of Venice visible among the islands and waterways. Bright turquoise patterns reveal sediment suspended in the shallow water, tracing currents and tidal channels in the lagoon. 🧪

#PPOD: The night sky stretches above ESO’s Paranal Observatory in Chile’s Atacama Desert, one of the world’s premier locations for ground-based astronomy. This view was captured beside Paranal’s Visitor Center, beneath the exceptionally dark skies... 🧪 🔭

#PPOD: How small can something form like a star?

JWST has found brown dwarfs in IC 348 with only about twice Jupiter’s mass—the least massive brown dwarfs known. Their existence challenges models of how stars and brown dwarfs form. 🧪 🔭

#PPOD: Roman has opened its eyes!

These fuzzy rings are the first photons of starlight captured by the Nancy Grace Roman Space Telescope’s 300-megapixel Wide Field Instrument.

And yes, they’re supposed to look like that—for now. 🧪 🔭

#PPOD: 180 years ago today, Johann Gottfried Galle used this telescope to discover Neptune — almost exactly where mathematics predicted it would be.

Urbain Le Verrier calculated the location of an unseen planet from its gravitational effects on Uranus. On Sept. 23, 1846, Galle searched for it. 🧪 🔭

#PPOD: Mars turns purple near its south pole! Morning light, airborne dust, surface frost, and dark volcanic material create the striking colors in this Mars Express view of Thyles Rupes. 🧪 🔭

#PPOD: Hurricane Melissa swirls south of Jamaica, as seen from the ISS. Sentinel-6 satellites measure the ocean from space, helping scientists track heat that can fuel hurricane intensification. Credit: NASA 🧪 🔭

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