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category: NASA

PDS 70: Disk, Planets, and Moons

By iftttauthorways4eu on Tue Aug 24 2021

It’s not the big disk that’s attracting the most attention. Although the big planet-forming disk around the star PDS 70 is clearly imaged and itself quite interesting. It’s also not the planet on the right, just inside the big disk, that’s being talked about the most. Although the planet PDS 70c is a newly formed […]

Abell 3827: Cannibal Cluster Gravitational Lens

By iftttauthorways4eu on Mon Aug 23 2021

Is that one galaxy or three? Toward the right of the featured Hubble image of the massive galaxy cluster Abell 3827 is what appears to be a most unusual galaxy — curved and with three centers. A detailed analysis, however, finds that these are three images of the same background galaxy — and that there […]

Explosions from White Dwarf Star RS Oph

By iftttauthorways4eu on Sun Aug 22 2021

Spectacular explosions keep occurring in the binary star system named RS Ophiuchi. Every 20 years or so, the red giant star dumps enough hydrogen gas onto its companion white dwarf star to set off a brilliant thermonuclear explosion on the white dwarf’s surface. At about 5,000 light years distant, the resulting nova explosions cause the […]

Triple Transit and Mutual Events

By iftttauthorways4eu on Sat Aug 21 2021

These three panels feature the Solar System’s ruling gas giant Jupiter on August 15 as seen from Cebu City, Phillipines, planet Earth. On that date the well-timed telescopic views detail some remarkable performances, transits and mutual events, by Jupiter’s Galilean moons. In the top panel, Io is just disappearing into Jupiter’s shadow at the far […]

Three Perseid Nights

By iftttauthorways4eu on Fri Aug 20 2021

Frames from a camera that spent three moonless nights under the stars create this composite night skyscape. They were recorded during August 11-13 while planet Earth was sweeping through the dusty trail of comet Swift-Tuttle. One long exposure, untracked for the foreground, and the many star tracking captures of Perseid shower meteors were taken from […]

Bright Meteor, Starry Sky

By iftttauthorways4eu on Thu Aug 19 2021

Plowing through Earth’s atmosphere at 60 kilometers per second, this bright perseid meteor streaks along a starry Milky Way. Captured in dark Portugal skies on August 12, it moves right to left through the frame. Its colorful trail starts near Deneb (alpha Cygni) and ends near Altair (alpha Aquilae), stars of the northern summer triangle. […]

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