🌘 The first photograph of a solar eclipse taken with the telescope of the Königberg Observatory in 1851.

The Sun not setting over the Earth's limb🌅

You know that in one day astronauts on board the ISS can observe up to 16 sunrises and sunsets.

But at times when the station's orbit passes near the terminator (the line separating the illuminated and unilluminated sides of the planet), the Sun may not set at all for its inhabitants.

The ISS is not always near the terminator, as this line shifts throughout the year due to the tilt of the Earth's axis of rotation.

Curiosity has filmed the night sky over Mars!

🌡 Average temperatures of the planets in our solar system:

- Mercury 167°C
- Venus 464°C
- Earth 15°C
- Mars -65°C
- Jupiter -110°C
- Saturn -140°C
- Uranus -195°C
- Neptune -200°C

🌅 NASA's InSight lander has recorded a sunset on Mars in 2022.

Astronaut Christopher Cassidy works outside the space station.
And some numbers that will help you look at this video in a different way: the station is currently moving relative to the Earth's surface at a speed of 28,000 km/h (8 times faster than a bullet), and the station weighs 418 tons.

Mercury, Venus, Mars, Earth — what elements make up the atmosphere of the eight planets of the Solar System. Let's take a look today. On the chart from COMPOUND INTEREST 2014.
Mercury is predominantly composed of O2 (oxygen), which is 42% of the total mass of gases on the planet. Venus and Mars are made up of 96% and 95% CO2 (carbon dioxide), respectively. The atmospheres of the four gas giants, such as Jupiter, Saturn, Uranus, and Neptune, are almost completely filled with hydrogen.

☀️ Demonstration of the speed at which the planets of the Solar System rotate around the Sun.

🌏 This is how the appearance of our planet has changed over the course of 200 million years.
Over the past 200 million years, the appearance of the Earth has undergone impressive changes.
The period includes changes in landforms, mountains, oceans, the evolution of plants and animals, and in particular the split of the supercontinent Pangea into 6 others, smaller and more widely known in the modern world — Eurasia, Asia, Africa, North and South America, and Antarctica.

We have all seen the behaviour of astronauts in weightlessness. But few of us have seen the behaviour of four-legged friends, such as cats, who have been placed in a training room for testing.

It looks like fun! 😸

An observer on the ground films the SpaceX Crew Dragon spacecraft entering the planet's atmosphere as it returns to Earth.

Mars is just around the corner: NASA has launched its new project simulating astronauts' life on the planet.

The first of three planned missions of the agency launched a year ago, on 25 June 2023, as part of the Crew Health and Performance Exploration Analog project. The essence of the CHAPEA-1 mission is that four volunteers for a year will stay in a special "bunker", living conditions in which are as close as possible to those that can be created on the future Martian base.

You can watch the rocket launch not only from the ground: pilots filmed the launch of the SpaceX Falcon 9 from the cockpit.

⚡️ 1 light second, 1 light year, 10, 100, 1000, 10,000, 10,000 and 100,000 light years on the scale of the infinite universe.

Soyuz docking to the International Space Station

Funny from the ISS: Astronaut and SpaceX Crew-5 crew engineer Nicole Mann took a funny selfie photo through a weightless bubble that refracted her image.

☀️ The Space Observatory for Solar Dynamics (SDO) shared a recording of the Sun in various ultraviolet wavelengths. While a star looks quite calm in the visible range and with a small number of spots on it, radiation in different wavelengths of ultraviolet radiation reveals much more detail.

If Saturn could contain Earth, it would need about 700 similar balls of equal shapes and sizes to fill it completely.
Comparison: Saturn's radius is ~ 9 Earth radii, Saturn's mass is ~ 95 Earth masses.

NASA astronauts recorded a mock video about what the Olympics might look like in space

A map of Mars if its surface was 71% covered by water 🤔