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category: NASA

NASA’s Artemis II Crew Meet with President, VP at White House

By iftttauthorways4eu on Thu Dec 21 2023

Artemis II crew members: CSA (Canadian Space Agency) astronaut Jeremy Hansen, left, NASA astronauts Christina Koch, Victor Glover, and Reid Wiseman, right, pose for a group photograph after their meetings with U.S. President Joe Biden and U.S. Vice President Kamala Harris at the White House in Washington, Thursday, Dec. 14, 2023. During their mission, the […]

Three Galaxies and a Comet

By iftttauthorways4eu on Thu Dec 21 2023

Distant galaxies abound in this one degree wide field of view toward the southern constellation Grus (The Crane). But the three spiral galaxies at the lower right are quite striking. In fact, all three galaxies are grouped about 70 million light years away and sometimes known as the Grus Triplet. They share the pretty telescopic […]

By iftttauthorways4eu on Wed Dec 20 2023

What’s causing those unusual sky arcs? Ice crystals. While crossing a field of fresh snow near Füssen, Bavaria, Germany, earlier this month, the photographer noticed that he had entered an ice fog. For suspended water to freeze into an ice fog requires quite cold temperatures, and indeed the air temperature on this day was measured […]

NGC 2264: Telescopes Illuminate ‘Christmas Tree Cluster’

By iftttauthorways4eu on Tue Dec 19 2023

This composite image shows the Christmas Tree Cluster. The blue and white lights (which blink in the animated version of this image) are young stars that give off X-rays detected by NASA’s Chandra X-ray Observatory. Optical data from the National Science Foundation’s WIYN 0.9-meter telescope on Kitt Peak shows gas in the nebula in green, […]

By iftttauthorways4eu on Tue Dec 19 2023

Could Queen Calafia’s mythical island exist in space? Perhaps not, but by chance the outline of this molecular space cloud echoes the outline of the state of California, USA. Our Sun has its home within the Milky Way’s Orion Arm, only about 1,000 light-years from the California Nebula. Also known as NGC 1499, the classic […]

Ice Flows on Mars

By iftttauthorways4eu on Mon Dec 18 2023

The surface of Mars is littered with examples of glacier-like landforms. While surface ice deposits are mostly limited to the polar caps, patterns of slow, viscous flow abound in many non-polar regions of Mars. Streamlines that appear as linear ridges in the surface soils and rocky debris are often exposed on top of infilling deposits […]

By iftttauthorways4eu on Mon Dec 18 2023

Are squares A and B the same color? They are! To verify this, either run your cursor over the image or click here to see them connected. The featured illusion, an example of the same color illusion, illustrates that purely human perceptions in science may be ambiguous or inaccurate, even such a seemingly direct perception […]

By iftttauthorways4eu on Sun Dec 17 2023

Where are all of these meteors coming from? In terms of direction on the sky, the pointed answer is the constellation of Gemini. That is why the major meteor shower in December is known as the Geminids — because shower meteors all appear to come from a radiant toward Gemini. Three dimensionally, however, sand-sized debris […]

Crescent Enceladus

By iftttauthorways4eu on Sat Dec 16 2023

Peering from the shadows, the Saturn-facing hemisphere of tantalizing inner moon Enceladus poses in this Cassini spacecraft image. North is up in the dramatic scene captured during November 2016 as Cassini’s camera was pointed in a nearly sunward direction about 130,000 kilometers from the moon’s bright crescent. In fact, the distant world reflects over 90 […]

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