Thierry Legault, a French astrophysicist, used a telescope to record images of the International Space Station (ISS) passing in front of the Sun on June 9.
The ISS flies over clusters of sunspots. (Video: Ƭhierry Legault).
At about 28,000 km/h, the ISS orbits the Earth in about 90 minutes, but passes the Sun in only about 0.75 seconds. Therefore, it is extremely difficult to record in high resolution like Legault, Business Intern June 14 was reported.
“The flyover took less than a second”, said Legɑult. He had the chance to immortalize this moment when 45 minutes later, a big cloud came to obscure the Sun.
In the images, the ISS station flies past three sunspot clusters, one of which is large enough to swallow Earth. At that time, NASA astronauts Stephen Bowen and Warren Hoburg had just left the station to install new solar cells.
The ISS passed in front of three clusters of sunspots.
The ISS station flies past three sunspot clusters.
In the video, the ISS appears to be very close to the Sun, but it is actually very far away. The ISS orbits the Earth at an altitude of about 400 km, while the Sun is up to 150 million km.
Sunspots appear dark because they are cooler than other regions of the Sun’s surface, according to NASA. Sunspots cool because they form where strong magnetic fields prevent heat from inside the Sun from reaching the surface. In the case of sunspots, the magnetic field is unstable and can trigger the Sun’s flare – a powerful explosion that releases energy and high-speed particles into space. Solar flares can produce spectacular auroras but also disrupt radio waves on Earth. Strong solar flares can even affect satellites, communication systems, power grids and, more seriously, cause blackouts or blackouts.
According to NASA, electrically charged particles from the solar flare can also pose radiation hazards to astronauts, especially when leaving the station for a spacewalk. Therefore, scientists are still carefully monitoring the Sun’s rays and NASA may cancel spacewalks before these particles reach Earth to ensure the safety of astronauts.
Article source: VnExpress
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Thierry Legault, a French astrophysicist, used a telescope to record images of the International Space Station (ISS) passing in front of the Sun on June 9.
