speed, you might want to research "orbital mechanics". OTOH, even the largest second stage type of an Ariane rocket has a dry mass of only about 4.5 tons, and will burn up in the atmosphere after de-orbiting. The huge Chinese single stage to orbit rocket with uncontrolled re-entry is problematic because it will ACTUALLY start orbiting the Earth, and, due to its mass - estimated to be above 20 tons - will not burn up completely upon re-entry. The first stage is jettisoned in designated areas in the Atlantic ocean, well away from populated land areas.Īs an Ariane first stage doesn't even reach orbit, it therefore cannot "stay in orbit for some time". I'm afraid your understanding of rocketry and orbital mechanics is so non-existent that you don't even realize that you know nothing about the subject.Īriane is a MULTI-STAGE rocket, and, therefore, its heavy first stage will be used for a fairly short amount of time and won't reach orbital velocity. > The difference is that they stay in orbit for some time – but NASA regularly posts videos from the ISS on YouTube. You can also stay to date with all the activities on the ISS on Twitter. Pesquet is very active aboard the ISS and regularly posts new photos on Twitter. You can view the ISS with the naked eye, no need for a telescope. NASA has set up a dedicated alert system () to let you know when the ISS is passing overhead. With the ISS orbiting Earth so many times during the day, there are numerous opportunities to spot the station as it orbits Earth. The ISS perigee altitude is 418km (259.7mi) and its apogee altitude is 422km (262.2mi). Despite the speed of the space station, Pesquet says that the crew doesn't have the impression of moving that quickly due to the orbital path's distance from Earth. More to come! 📷🤓 #MissionAlpha /h2GJScy6mkĭuring the 30 second exposure, the ISS traveled about 235km. The trails you see are stars, and city lights. This image is one 30-second exposure of Earth at night. It gives the impression of the speed we fly at (28 800 km/h!). He recently shared an image shot with a 30-second exposure that shows ISS stationary in the frame while the Earth's surface streaks behind in the background.Ī picture from some tryouts of a photo technique I’ve been experimenting with. Pesquet has been experimenting with different photographic techniques to show the ISS's speed.
It's hard to conceptualize that amount of speed, but French astronaut Thomas Pesquet is aboard the ISS now and wanted to help those of us on terra firma understand the speed at which the ISS moves. It takes the ISS a mere 92.68 minutes to orbit Earth, meaning it goes around Earth nearly 16 times per day. The modular space station has an orbital speed of 7.66 kilometers per second, which is roughly 17,100 mph. Above the stratosphere, blue layers likely mark the transition between the middle and upper atmosphere as it gradually fades into the blackness of outer space.The International Space Station (ISS) moves fast. The pink to white region above the clouds appears to be the lower stratosphere this atmospheric layer generally has few or no clouds. Deep oranges and yellows appear in the troposphere, which contains over 80 percent of the mass of the atmosphere and almost all of the water vapor, clouds, and precipitation. For those in the Northern Hemisphere, it may look like this is a waning crescent, but note, this image is taken above the Southern Hemisphere.Ībove the surface of the Earth, a brilliant sequence of colors roughly denotes several layers of the atmosphere. We can see a sliver of the lit half of the Moon, while most of the near side of the Moon is facing away from the Sun and is in darkness. A waxing crescent moon is photographed from the International Space Station during an orbital sunset as the station flies 268 miles (431 kilometers) above the Pacific Ocean, east of New Zealand.
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