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NASA Astronomy Picture of the Day:

Planet Earth hangs in the background of this space age selfie. The snapshot was captured by the IM-2 Nova-C lander Athena, just after stage separation following its February 26 launch to the Moon. A tall robotic lander, Athena is scheduled to touch down on Thursday, March 6, in Mons Mouton, a plateau near the Moon’s South Pole. The intended landing site is in the central portion of one of the Artemis 3 potential landing regions. Athena carries rovers and experiments as part of NASA's Commercial Lunar Payload Services program, including a drill intended to explore beneath the lunar surface in a search for evidence of frozen water. It also carries a propulsive drone dubbed the Micro Nova Hopper. After release to the lunar surface, the autonomous drone is intended to hop into a nearby crater and send science data back to the lander.

Skull of a Smilodon populator Lund, 1842 at the Museum of Zoology of the University of São Paulo, Brazil.

Wilfredor, CC BY-SA 4.0, via Wikimedia Commons. View source.

NASA Astronomy Picture of the Day:

Framed in this single, starry, telescopic field of view are two open star clusters, M35 and NGC 2158. Located within the boundaries of the constellation Gemini, they do appear to be side by side. Its stars concentrated toward the upper right, M35 is relatively nearby, though. M35 (also cataloged as NGC 2168) is a mere 2800 light-years distant, with 400 or so stars spread out over a volume about 30 light-years across. Bright blue stars frequently distinguish younger open clusters like M35, whose age is estimated at 150 million years. At lower left, NGC 2158 is about four times more distant than M35 and much more compact, shining with the more yellowish light of a population of stars over 10 times older. In general, open star clusters are found along the plane of our Milky Way Galaxy. Loosely gravitationally bound, their member stars tend to be dispersed over billions of years as the open star clusters orbit the galactic center.

Photo by Evan Tsai

Hou Yifan at the 2016 Chess Olympiad in Baku, Azerbaijan. She participated in the Chinese team which won first place in the Women's event. Hou turns 31 today.

Andreas Kontokanis from Piraeus, Greece, CC BY-SA 2.0, via Wikimedia Commons. View source.

NASA Astronomy Picture of the Day:

Do you see the ring? If you look very closely at the center of the featured galaxy NGC 6505, a ring becomes evident. It is the gravity of NGC 6505, the nearby (z = 0.042) elliptical galaxy that you can easily see, that is magnifying and distorting the image of a distant galaxy into a complete circle. To create a complete Einstein ring there must be perfect alignment of the nearby galaxy's center and part of the background galaxy. Analysis of this ring and the multiple images of the background galaxy help to determine the mass and fraction of dark matter in NGC 6505's center, as well as uncover previously unseen details in the distorted galaxy. The featured image was captured by ESA's Earth-orbiting Euclid telescope in 2023 and released earlier this month.

Photo by ESA, NASA, Euclid Consortium; Processing: J.-C. Cuillandre, G. Anselmi, T. Li

Rama VIII Bridge over the Chao Phraya River in Bangkok, Thailand, seen just after sunrise.

Dominic Nelson, CC BY-SA 4.0, via Wikimedia Commons. View source.

NASA Astronomy Picture of the Day:

Why are there so many bright blue stars? Stars are usually born in clusters, and the brightest and most massive of these stars typically glow blue. Less-bright, non-blue stars like our Sun surely also exist in this M41 star cluster but are harder to see. A few bright orange-appearing red giant stars are visible. The red-light filaments are emitted by diffuse hydrogen gas, a color that was specifically filtered and enhanced in this image. In a hundred million years or so, the bright blue stars will have exploded in supernovas and disappeared, while the slightly different trajectories of the fainter stars will cause this picturesque open cluster to disperse. Similarly, billions of years ago, our own Sun was likely born into a star cluster like M41, but it has long since drifted apart from its sister stars. The featured image was captured over four hours with Chilescope T2 in Chile.

Photo by Xinran Li

Youngzin cottage in the historic Gemoor Khar against backdrop of the Gephan range, Gemur village, Lahaul, India. Elevation 3,290 m (10,790 ft), peaks about 6,000 m (20,000 ft).

This Photo was taken by Timothy A. Gonsalves. Feel free to use my photos, but please mention me as the author. I would much appreciate if you send me an email tagooty@gmail.com or write on my talk page, for my information. Please contact me before commercial use. Please do not upload an edited image here without consulting me. I would like to make corrections only at my own source to ensure that the changes improve the image and are preserved.Otherwise you may upload an edited image with a new name. Please use one of the templates derivative or extract., CC BY-SA 4.0, via Wikimedia Commons. View source.