Universe And Science

2021-06-13 09:08:04 Geysers erupting from the south pole of Enceladus during a Cassini flyby

Enceladus is the sixth-largest moon of Saturn. In 2005, NASA's Cassini spacecraft detected plumes of water vapor and icy particles erupting from Enceladus, revealing the existence of a giant ocean hidden under the moon's frozen shell. These jets are really active, consistently blasting around 250 kg of water into space every second, at speed exceeding 2 kilometers per second. This is powerful enough that most of the water vapour particles escape Enceladus' weak gravity, and they end up in orbit around Saturn, forming Saturn's E ring.

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2021-06-12 05:38:11 Did You Know?

NASA’s Parker Solar Probe is the fastest human-made object of all time. On April 29, 2021, the probe approached the Sun for the eighth time during its mission. At this moment, "Parker" was only 11.1 million km from the center of the star and the speed of its movement was 147.7 kilometers per second! (0.05% the speed of light).

Continuing its work, the probe will approach the Sun several times and with each such approach it will be closer and closer to the star. Accordingly, its speed at the moments of passing the next perihelion will be higher and higher.

Parker Solar Probe will break its own records, achieving a top speed of about 192 km/s in 2024. ओपन / कमेंट

2021-06-11 06:56:11 This image from Parker Solar Probe's WISPR instrument is the 1st-ever photo taken from inside the sun’s outer atmosphere, or corona – on December 8, 2018. The bright streak is a coronal streamer. The fine structure of the streamer is very clear, with at least two rays visible. Parker Solar Probe was about 16.9 million miles from the Sun's surface when this image was taken. The bright object near the center of the image is Mercury, and the dark spots are a result of background correction.

NASA/NRL/Parker Solar Probe ओपन / कमेंट

2021-06-10 06:00:42 ओपन / कमेंट

2021-06-09 05:33:42 A NASA spacecraft made the closest flyby of Jupiter's largest moon in 21 years on Monday (June 7). The first two images from NASA Juno’s June 7, 2021, flyby of Jupiter’s giant moon Ganymede have been received on Earth. Image resolution is about 1 kilometer per pixel. Note that, Juno spacecraft passed at a distance of only 1046 km from Ganymede's surface. By the way, Ganymede is the largest moon in the solar system. It is larger than Mercury and Pluto, and only slightly smaller than Mars. It would easily be classified as a planet if were orbiting the sun rather than Jupiter.

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2021-06-08 05:57:49 A near-true-colour image of Pluto's bluish atmospheric hazes taken by New Horizons spacecraft in 2015. In this image, Pluto is illuminated from behind by the Sun, almost as if the world is producing an annular eclipse for New Horizons. By the way, did you know? Pluto’s atmosphere as far as 1,600 kilometers above the surface of the planet. In comparison, Earth's atmosphere, extending from 10 kilometers to 50 kilometers above the surface of the Earth.

Image Credit: NASA/JHUAPL/SwRI ओपन / कमेंट

2021-06-07 04:09:37 ​​Selected Moons of the Solar System, with Earth for Scale. ओपन / कमेंट

2021-06-06 05:52:39 The small dot in the rings of Saturn is our Earth. This is the last picture of our planet taken by the Cassini spacecraft. The spacecraft captured the view on April 12, 2017. Earth's moon is also visible in this image (zoom it).

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2021-06-05 16:11:27 Did You Know?

Venus is a super-rotator, meaning that its atmosphere rotates faster than the planet itself. Atmospheric super-rotation has also been observed on Titan, the largest moon of Saturn. ओपन / कमेंट

2021-06-04 12:34:49 This two images of Saturn's outer A ring features the small moon Daphnis and the waves it raises in the edges of the Keeler Gap (42-km-wide gap in the A ring). Daphnis is about 8 kilometres in diameter. These images was taken by NASA's Cassini spacecraft on 2017. Note that, Keeler Gap was formed due to the gravity of the Saturn's moon, Daphnis. ओपन / कमेंट