Outer Space 🚀

2023-06-14 14:00:15 Earth's orbit

About 34,000 man-made objects larger than 10 cm, 900,000 objects from 1-10 cm, and more than 128 million debris smaller than 1 cm are in Earth's orbit.

Most space debris travels quite fast and can reach 29,000 km/h, nearly 7 times the speed of a bullet. Открыть/Комментировать

2023-06-13 21:00:07 Why is the starry sky revolving, but the Polaris is stationary?

The fact is that the rotation of the Earth around its axis is accompanied by the rotation of the axis itself. This effect is called precession. The precession cycle is about 28,000 years and is also known as the Platonic year.

That is, a fixed point in the starry sky also moves in a circle, but oh-so-slowly. A similar fixed point in the southern hemisphere sky is not so lucky and there are no bright stars nearby. The constellation Southern Cross is usually used for primitive navigation. Открыть/Комментировать

2023-06-13 14:00:09 What methods of protection could be used against lunar dust adhering to a spacesuit?

Since the Moon has no atmosphere, no precipitation, no wind, no mechanical movements of lunar surface particles, there is no and cannot be dust formation as a physical phenomenon.

And that dust, which can be formed as a result of human activity by astronauts, will be removed as it is forming by one of the methods used by astronauts on orbital flights in space, or by the creation of antigravity. Открыть/Комментировать

2023-06-12 21:00:09 The InSight mission team released the final selfies of the vehicle

The selfies give a vivid picture of the spacecraft's desperate power situation. Its casing and solar panels are covered with a thick layer of dust. Thanks to it, InSight now generates ten times less power than it did immediately after landing on Mars in late November 2018.

In an effort to save energy and maximize Insight's lifespan, engineers began gradually shutting down the vehicle's systems and instruments, including its manipulator, which was used to take self-portraits. Открыть/Комментировать

2023-06-12 14:00:12 Elon Musk shared a photo of the Falcon 9 rocket after launch

This rocket sent 59 small satellites on a ridesharing mission called Transporter 5.

The special feature of this mission was the simultaneous launch of multiple satellites for different customers. Открыть/Комментировать

2023-06-11 21:00:07 That type of cloud is called a "thunderstorm collar”

These low, horizontal, trumpet-shaped clouds are quite rare. A thunderstorm collar may form near an incoming cold front.

If a downward flow of air from an incoming storm causes warm, moist air to rise, it cools below the dew point and forms a cloud. Открыть/Комментировать

2023-06-11 14:00:10 How are galactic nuclei formed?

According to one theory, galactic nuclei are the primary black holes, around which galaxies were formed from matter formed during the Big Bang. Just as planetary systems were formed from the gas and dust disk around a star.

A primary black hole is a hypothetical type of black hole that was formed not due to the gravitational collapse of a large star, but in superdense matter at the time of the initial expansion of the Universe. Открыть/Комментировать

2023-06-10 21:00:08 Here is the planet Kepler-10b with lava oceans on its surface

The temperature on the planet's surface reaches 1,400 degrees Celsius.

Under the influence of such a high temperature, the rocks on the planet's surface melt, merge into vast areas, and become enormous oceans. Открыть/Комментировать

2023-06-10 14:00:08 Taste buds malfunction in space

Astronauts have fluid redistribution in their bodies, so they lose their sense of taste.

Most astronauts suffer from food that seems incredibly bland and even tasteless, so they begin to have a real craving for spicy and sour foods. Открыть/Комментировать

2023-06-09 21:00:07 Solar system has its own tail

Most similar to the tail of a comet, the only difference being that this one is shaped like a four-leaf clover. It's called a heliotail. Nothing was known about it for the simple reason that the tail consists of particles invisible to traditional instruments.

The heliotail stretches 13 billion kilometers from the edge of the Solar System. Its particles are scattered in all directions at a speed of 1.6 million kilometers per hour. Открыть/Комментировать