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SpaceX Dragon crew to blast off for ISS – Phys.org

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A SpaceX Falcon 9 rocket on the launch pad at the Kennedy Space Center in Florida.

A SpaceX Falcon 9 rocket is to blast off early Monday for the International Space Station carrying two NASA astronauts, a Russian cosmonaut and the second Emirati to voyage to space.

The SpaceX Dragon Crew-6 is set to lift off from the Kennedy Space Center in Florida at 1:45 am (0645 GMT). Weather conditions are expected to be near perfect.

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The Crew Dragon , dubbed Endeavour, is scheduled to dock with the ISS at 2:38 am (0738 GMT) on Tuesday if all goes as planned.

NASA’s Stephen Bowen and Warren Hoburg, Russia’s Andrey Fedyaev and Sultan al-Neyadi of the United Arab Emirates are to spend six months on the orbiting station.

Neyadi, 41, will be the fourth astronaut from an Arab country and the second from the oil-rich United Arab Emirates to journey to space; his countryman Hazzaa al-Mansoori flew an eight-day mission in 2019.

Neyadi described the upcoming mission as a “great honor.”

Hoburg, the Endeavour pilot, and Fedyaev, the Russian mission specialist, will also be making their first space flights.

Fedyaev is the second Russian cosmonaut to fly to the ISS aboard a SpaceX rocket. NASA astronauts fly regularly to the station on Russian Soyuz capsules.

Space has remained a rare venue of cooperation between Moscow and Washington since the Russian offensive in Ukraine placed the two capitals in sharp opposition.

Such exchanges have continued despite those tensions.

Bowen, a veteran of three space shuttle missions, said politics rarely come up while in space.

Russian cosmonaut Andrey Fedyaev sits next to a photo of the patch bearing the names of the four members of SpaceX Dragon Crew-6
Russian cosmonaut Andrey Fedyaev sits next to a photo of the patch bearing the names of the four members of SpaceX Dragon Crew-6 mission.

“We’re all professionals. We keep focused on the mission itself,” the mission commander said. “It’s always been a great relationship we’ve had with cosmonauts once we get to space.”

While aboard the ISS, the Crew-6 members will conduct dozens of experiments including studying how materials burn in microgravity and researching heart, brain and cartilage functions.

The current crew is the sixth to be transported by a SpaceX rocket to the ISS. The Endeavour capsule has flown into space three times.

NASA pays the private SpaceX company to ferry astronauts to the flying laboratory roughly every six months.

The space agency expects Crew-6 to have a handover of several days with the four members of the SpaceX Dragon Crew-5, who have been stationed on the ISS since October. Crew-5 will then return to Earth.

Rescue capsule

Also currently aboard the ISS are Russian cosmonauts Dmitry Petelin and Sergei Prokopyev, as well as NASA astronaut Frank Rubio.

They had been scheduled to return home on March 28 but the cooling system of their Soyuz MS-22 capsule was damaged by a tiny meteoroid in mid-December while docked with the ISS.

An uncrewed Russian Soyuz capsule, MS-23, took off on Friday from Kazakhstan to bring the three astronauts home. They are now scheduled to return to Earth in September.

The ISS was launched in 1998 at a time of increased US-Russia cooperation following the Cold War space race.

Russia has been using the aging but reliable Soyuz capsules to ferry astronauts into space since the 1960s.

But in recent years, Russia’s space program has been beset by a litany of problems that have led to the loss of satellites and vehicles.

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SpaceX Dragon crew to blast off for ISS (2023, February 26)
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Solar Storm That Caused Dazzling Auroral Display Could Linger

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(Bloomberg) — A brilliant display of northern lights touched off by a massive geomagnetic storm was visible to a wide swath of the world Friday, and the aurora could linger through Saturday in many places if the weather is clear.

Red, purple and green streamers of the aurora borealis dazzled viewers in North America on Friday and were seen much farther south than normal, with people in California, Arizona and Texas reporting they could see it, according to AccuWeather, Inc. Typically, the spectacular display is only visible in northern locales like Alaska, North Dakota, Canada and Iceland.

The display was touched off by a severe geomagnetic storm that peaked about 12:04 a.m. Friday, according to the US Space Weather Prediction Center, and if the weather is clear, more could be in store on Saturday.

A coronal mass ejection, an explosion of magnetic fields and plasma from the sun’s atmosphere, hit Earth early Friday with more force than initially forecast. These events can disrupt Earth’s magnetic field causing auroral displays, as well as disrupting satellites, communication and electric grids.

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Read more: A Swedish Resort Lets You See the Northern Lights From Your Room

The US Space Weather Prediction Center had originally expected a G2 level storm Friday on its five-step scale, the event measured in at G4, one of the strongest triggered on Earth since 2017.

In addition to the dazzling auroral displays, a G4 storm can cause headaches for power grid operators and force spacecraft to adjust their orbits. The storm can also degrade satellite navigation, radio broadcasts and even cause pipelines to build up an electric charge. In early 2022, Elon Musk’s SpaceX lost 40 Starlink satellites because of a solar storm.

The impacts from the coronal mass ejection have trailed off, but energy coming from what scientists call a “coronal hole” will continue at least through Saturday and that could mean the aurora could be seen by viewers across Europe, Asia and North America through Sunday, the UK Met Office said on its website.

There are currently eight sunspot clusters visible on the side of the sun facing Earth, however another coronal mass ejection blasting toward us isn’t forecast, the UK Met Office said.

 

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An airplane-sized asteroid will pass between the Earth and moon’s orbits Saturday

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An asteroid dubbed “city killer” for its size will pass harmlessly between the moon and the Earth Saturday evening.

The asteroid 2023 DZ2 will pass at a distance of over 100,000 miles, less than half the distance between the Earth and the moon. It’s about 160 feet long — about the size of an airliner. An asteroid that size could cause significant damage if it hit a populated area, hence its nickname.

“While close approaches are a regular occurrence, one by an asteroid of this size (140-310 ft) happens only about once per decade, providing a unique opportunity for science,” NASA Asteroid Watch tweeted.

Astronomers from the International Asteroid Warning Network, established about 10 years ago to coordinate international responses to potential near-Earth object impact threats, will be monitoring and learning from this asteroid.

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NASA Asteroid Watch called the opportunity “good practice” in case “a potential asteroid threat were ever discovered.”

Near-Earth objects are asteroids or comets that pass close to the Earth’s orbit, and they generally come from objects that are affected by other planets’ gravity, moving them into orbits that push them close to Earth, according to the United Nations Office for Outer Space Affairs.

The European Space Agency maintains a risk list of 1,460 objects, which catalogs every object with a non-zero chance of hitting Earth over the next 100 years. Asteroid 2023 DZ2, which is in orbit around the sun, is not on the risk list.

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Large asteroid to zoom between Earth and Moon

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On Saturday, the 2023DZ2 will come within a third of the distance from the Earth to the Moon.

A large asteroid will safely zoom between Earth and the Moon on Saturday, a once-in-a-decade event that will be used as a training exercise for planetary defence efforts, according to the European Space Agency.

The asteroid, named 2023 DZ2, is estimated to be 40 to 70 metres (130 to 230 feet) wide, roughly the size of the Parthenon, and big enough to wipe out a large city if it hit our planet.

At 19:49 GMT on Saturday, it will come within a third of the distance from the Earth to the Moon, said Richard Moissl, the head of the ESA’s planetary defence office.

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Though that is “very close”, there is nothing to worry about, he told AFP news agency.

Small asteroids fly past every day, but one of this size coming so close to Earth only happens about once every 10 years, he added.

The asteroid will pass 175,000km (109,000 miles) from Earth at a speed of 28,000 kilometres per hour (17,400 miles per hour). The Moon is roughly 385,000km (239,228 miles) away.

An observatory in La Palma, one of Spain’s Canary Islands, first spotted the asteroid on February 27.

Last week, the United Nations-endorsed International Asteroid Warning Network decided it would take advantage of the close look, carrying out a “rapid characterisation” of 2023 DZ2, Moissl said. That means astronomers around the world will analyse the asteroid with a range of instruments such as spectrometers and radars.

The goal is to find out just how much we can learn about such an asteroid in only a week, Moissl said. It will also serve as training for how the network “would react to a threat” possibly heading our way in the future, he added.

The asteroid will again swing past Earth in 2026, but poses no threat of impact for at least the next 100 years – which is how far out its trajectory has been calculated.

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