Universe And Science

2021-05-20 06:30:03 A small test for attentiveness. Before reading the next paragraph, try to determine how the last photo of Saturn in the collection is different from the rest?

In the first four images, the shadows from the planet's rings are clearly visible, but in the last image it is not immediately clear that the thin dark strip running along the planet's equator is the desired shadow.

The image (or rather, it is a mosaic of several photos) was taken by the Cassini probe in August 2009 at the time of the equinox on Saturn. At this moment, the Sun passes the celestial equator of Saturn and the rings are located with an edge to the luminary. Compared to the width, the thickness of the rings is insignificant: from tens of meters to 1 km. Therefore, the shadow is a narrow strip.

Equinox occurs on Saturn approximately every 15 years.

Note: Equinox is the time or date at which the sun crosses the celestial equator, when day and night are of approximately equal length. ओपन / कमेंट

2021-05-19 18:20:57 The beautiful aurora on Jupiter's north pole. This beautiful aurora measures roughly the same size as Earth.

Know More | Image Credit: NASA/ESA ओपन / कमेंट

2021-05-19 15:05:01 First photos from the Chinese mars rover zhurong is out. This six-wheeled robot was landed on mars on 14 may, 2021. China is now the third country to land successfully on Mars. ओपन / कमेंट

2021-05-19 12:30:00 Einstein ring

An Einstein ring is created when light from a galaxy or star passes by a massive object en route to the Earth. Due to gravitational lensing, the light is diverted, making it seem to come from different places. If the source, lens, and observer are all in perfect alignment, the light appears as a ring. Image above shows the gravity of a luminous red galaxy (LRG) has gravitationally distorted the light from a much more distant blue galaxy. Here the lens alignment is so precise that the background galaxy is distorted into a horseshoe -- a nearly complete ring.

Image Credit: ESA/Hubble & NASA ओपन / कमेंट

2021-05-19 06:30:10 Milky Way, Andromeda, Triangulum Encounter Visualization

This is the illustration view of Andromeda–Milky Way collision from sun's current position in the Milky Way relative to the centre of the Milky Way.

Visualization Credit: F. Summers (STScI)

Simulation Credit: G. Besla (Columbia University), and R. van der Marel (STScI) ओपन / कमेंट

2021-05-15 16:42:26 Fact

By Earth vehicle standards, the Perseverance rover is slow. By Martian vehicle standards, however, Perseverance is a standout performer. The rover has a top speed on flat, hard ground of 4.2-centimeters per second, or 152 meters per hour.

Source ओपन / कमेंट

2021-05-13 14:30:00 ओपन / कमेंट

2021-05-12 12:55:55 NASA’s Probe With Its Precious Bennu Sample Is Finally Returning to Earth!

A spacecraft carrying around 56.70g of dust from the surface of an asteroid is on its way back to Earth. The spacecraft, called OSIRIS-REx, launched its thrusters for 7 minutes on Monday to leave the asteroid Bennu. This is the largest sample collected since the manned Apollo missions to the Moon. If all goes according to plan, on September 24, 2023, the spacecraft will drop a capsule with collected asteroid samples onto Earth.

Know More ओपन / कमेंट

2021-05-09 15:31:04 Photo of Albert Einstein's office, taken the day he died. ओपन / कमेंट

2021-05-08 15:55:47 Fact

The total mass of all the asteroids in our solar system combined is less than that of Earth's Moon.

Source ओपन / कमेंट