Is the speed of light really that fast?

✨A beam of light makes 7.5 revolutions per second around the Earth. Seems fast, let's zoom in.

It already takes 1.255 seconds to get to the Moon for this procedure. It took 3 minutes for the beam of light to travel from Earth to Mars.

Conclusion: the speed of light is not that fast, especially on the scale of the Universe✨

#Light
👉 @AstroMechanics

#Fun😂
👉 @AstroMechanics

What's the difference between a meteorite and a meteor?

✨Plenty of asteroid fragments are scattered in space, moving along an arbitrary trajectory, or have fairly stable orbits.

When such a fragment enters the planetary gravitational field, its trajectory changes and it gradually rushes toward the planet's surface.

Meteor is a glowing streak left by a space object in the night sky as it burns up in the atmosphere.

When a space body reaches the planet's surface, it may be termed a meteorite✨

#Meteorite
👉 @AstroMechanics

Human Orbital Stay World Record

✨The world record for the space flight duration belongs to Russian cosmonaut Valeriy Polyakov. He spent 437 days on the Mir station.

And this year the NASA astronaut Mark Vande Hei intends to break the record for the United States. For this purpose, he has to stay aboard the ISS until April 2021✨

#AmazingRecord
👉 @AstroMechanics

What age do astronauts retire at?

✨Each astronaut retires when their health no longer allows them to fly or for personal reasons. No upper limit is set, it all depends on the individual astronaut.

Twenty-three years ago, 77-year-old American John Glenn proved that advanced age is no barrier to spaceflight. Since 1962, when Glenn was first on board the space shuttle, he has dreamed of flying again.

And on October 29, 1998, he finally made his dream come true. The gap between the astronaut's first and last flight was 36 years✨

#Astronaut
👉 @AstroMechanics

Why do astronauts not fly to the dark side of the Moon?

✨The point is that there is no radio communication with Earth on the other side of the Moon.

One solution to this problem is to use a constellation of satellites to send a signal, though this approach is expensive and difficult.

Sending people to the Moon without constant communication is an unreasonable risk❗

#Moon
👉 @AstroMechanics

Planet HD 189733 b

✨The planet's surface rains glass and winds up to 2 kilometers per second.

But the worst thing is the surface temperature, which exceeds 1000 degrees Celsius. The exoplanet is similar in size to Jupiter and is about 63 light years away from Earth✨

#Planetinfo
👉 @AstroMechanics

The hottest star

✨With a surface temperature of 210,000°C (!), WR 102 claims to be the hottest star known to us in the Universe.

WR 102 is a Wolf-Rayet oxygen star located 9,800 light-years from Earth in the Sagittarius constellation. It features high luminosity and stands very close to a supernova explosion✨

#TheHottestStar
👉 @AstroMechanics

NASA Artemis Moon Missions: launch dates & facts
https://www.rmg.co.uk/stories/topics/nasa-moon-mission-artemis-program-launch-date

Gravitational microlensing🔍

✨Gravitational microlensing is an observational effect that was predicted in 1936 by Einstein using his General Theory of Relativity. When one star in the sky appears to pass nearly in front of another, the light rays of the background source star become bent due to the gravitational "attraction" of the foreground star.

🚀The gravitational microlensing method allows planets to be found using light from a distant star. The path of the light from this star will be altered by the presence of a massive lens – in our case, a star and a planet. Thus, for a short period of time, the distant star will appear brighter✨

#GML
👉 @AstroMechanics

Earth size VS. the largest known star

✨The imaging compares our planet with the largest known star in the observable universe, the UY Scuti.

As calculated, the star is 6.498 quadrillion times larger than our Earth❗
#Earth
👉 @AstroMechanics

"Send Your Name to Mars" Great News for space fans🚀🤩!
✨NASA's “Send Your Name to Mars” is a program that lets space fans take part by submitting their name which will then become a part of a future spacecraft!
📌Subscribers who have used the link down below, filled out the form, and got the ticket show us the image of ticket on the group✨

👇🏾👇🏾👇🏾👇🏾👇🏾👇🏾👇🏾
https://mars.nasa.gov/participate/send-your-name/future
👉🏼 @AstroMechanics

M33: a galaxy in the Triangle

✨In the small northern Triangle Constellation lies a galaxy that is also called the "Helix" or simply the Triangle Galaxy.

M33 is over 50,000 light-years in diameter and is the third largest in the Local Group of galaxies after the Andromeda Galaxy (M31) and our Milky Way✨

#Galaxy
👉 @AstroMechanics

Radioactive isotopes on the ocean bottom

✨Scientists investigated a time span of 11 million years of our planet's life and in the process discovered 120 alien radioactive particles in the interior of the crust beneath the Pacific, Atlantic and Indian Oceans.

📌These particles came to Earth more than a million years ago as a result of supernovae exploding.

As an example, one supernova exploded around 2.3 million years ago and was about 9.2 times heavier than the Sun. A second star exploded about 1.5 million years ago and was about 8.8 times heavier than the Sun✨

#Radioactive
👉 @AstroMechanics