Tuesday, Jul 29, 2025

Our world is full of incredible sights, from shining aurorae to curtains of lava, but looking beyond, we see beautiful full moons every four weeks. Even farther out, New Horizons showed us the surface of Pluto, and SPHEREx captured the Vela Molecular Ridge.

Credit: NASA/Nichole Ayers

Monday, 21 July 2025

Aurora Australis

The aurora australis arcs above a partly cloudy Indian Ocean in this photograph from the International Space Station as it orbited 430 kilometers above between Australia and Antarctica on June 12, 2025.

Astronauts aboard the space station take photos using handheld digital cameras, usually through windows in the station’s cupola, for Crew Earth Observations. Crew members have produced hundreds of thousands of images of the Moon and Earth’s land, oceans, and atmosphere.

Credit: NASA/JPL-Caltech

Tuesday, 22 July 2025

Vela Molecular Ridge

This image of the Vela Molecular Ridge was captured by NASA's SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) and was part of the mission's first public data release on July 2, 2025. The yellow patch at right is RCW 36, an emission nebula – a cloud of interstellar gas and dust that glows in some infrared colors due to radiation from nearby stars.

SPHEREx detects 102 infrared wavelengths, or colors, that aren't visible to the human eye. This image represents some of those wavelengths in three visible light colors – red, green, and blue.

Credit: Hamza Khan via EPOD

Wednesday, 23 July 2025

Twelve Full Moons

This collage features every full Moon from April 2024 (upper left) to March 2025 (lower right) as viewed and photographed through binoculars. The full Moons of August through November (so-called supermoons) occurred when the Moon happened to be at perigee (its closest point) in its orbit around the Earth. Note that the Pink Moon (April) was observed when the Moon was low in the sky and therefore more reddened than the other full Moons.

Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

Thursday, 24 July 2025

The Jagged Shores of Pluto’s Highlands

This enhanced color view from NASA's New Horizons spacecraft zooms in on the southeastern portion of Pluto's great ice plains, where at lower right the plains border rugged, dark highlands informally named Krun Macula.

Krun Macula -- Krun is the lord of the underworld in the Mandaean religion, and a macula is a dark feature on a planetary surface -- is believed to get its dark red color from tholins, complex molecules found across Pluto. Krun Macula rises 2.5 kilometers above the surrounding plain -- informally named Sputnik Planum -- and is scarred by clusters of connected, roughly circular pits that typically reach between 8 and 13 kilometers across, and up to 2.5 kilometers deep.

Credit: The Icelandic Met Office/Halldór Björnsson

Friday, 25 July 2025

Icelandic Wall of Fire

A lava-emitting fissure has emerged along Iceland's Sundhnúkur crater line as the Reykjanes peninsula undergoes another volcanic event. This opening occurred on Wednesday, July 16, following a series of tremors, as reported by the Icelandic Met Office (IMO). The eruption was photographed from a Coast Guard helicopter during a surveillance flight, showing a curtain of lava fountaining out of the long fissure.

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