Latest news with #meteorShower
Yahoo
6 days ago
- Science
- Yahoo
Astrophysicist explains if the meteorite that landed in Georgia could be connected to the current meteor shower
"The thing is that time ranges when those meteors could occur," Moffett said. "It could be associated with that meteor shower, or it could just be a completely random instance."
Asharq Al-Awsat
25-06-2025
- Science
- Asharq Al-Awsat
Study: Earth's Satellites at Risk if Asteroid Smashes into Moon
If a huge asteroid smashes into the Moon in 2032, the gigantic explosion would send debris streaming towards Earth that would threaten satellites and create a spectacular meteor shower, according to researchers. Earlier this year there were briefly fears that the 60-meter-wide (200-foot-wide) asteroid called 2024 YR4, which is big enough to level a city, would strike Earth on December 22, 2032, according to AFP. Subsequent observations from telescopes definitively ruled out a direct hit on Earth. However, the odds that it will crash into the Moon have risen to 4.3%, according to data from the James Webb space telescope in May. A new preprint study, which has not been peer-reviewed, is the first to estimate how such a collision could affect Earth. It would be the largest asteroid to hit the Moon in around 5,000 years, lead study author Paul Wiegert of Canada's University of Western Ontario told AFP. The impact would be 'comparable to a large nuclear explosion in terms of the amount of energy released,' he added. Up to 100 million kilograms of material would shoot out from the Moon's surface, according to a series of simulations run by the researchers. If the asteroid hit the side of the Moon facing Earth -- which is roughly a 50% chance -- up to 10% of this debris could be pulled in by Earth's gravity over the following days, they said. 'A centimeter-sized rock travelling at tens of thousands of meters per second is a lot like a bullet,' Wiegert said. In the days after the impact, there could be more than 1,000 times the normal number of meteors threatening Earth's satellites, he added. Meanwhile, those of us on the ground would be treated to a 'spectacular' meteor shower lighting up the night sky, the study said.
Yahoo
23-06-2025
- Science
- Yahoo
Earth's satellites at risk if asteroid smashes into Moon: study
If a huge asteroid smashes into the Moon in 2032, the gigantic explosion would send debris streaming towards Earth that would threaten satellites and create a spectacular meteor shower, according to researchers. Earlier this year there were briefly fears that the 60-metre-wide (200-foot-wide) asteroid called 2024 YR4, which is big enough to level a city, would strike Earth on December 22, 2032. It was given the highest chance -- 3.1 percent -- of hitting our home planet that scientists have ever measured for such a giant space rock. Subsequent observations from telescopes definitively ruled out a direct hit on Earth. However, the odds that it will crash into the Moon have risen to 4.3 percent, according to data from the James Webb space telescope in May. A new preprint study, which has not been peer-reviewed, is the first to estimate how such a collision could affect Earth. It would be the largest asteroid to hit the Moon in around 5,000 years, lead study author Paul Wiegert of Canada's University of Western Ontario told AFP. The impact would be "comparable to a large nuclear explosion in terms of the amount of energy released", he added. Up to 100 million kilograms (220 million pounds) of material would shoot out from the Moon's surface, according to a series of simulations run by the researchers. If the asteroid hit the side of the Moon facing Earth -- which is roughly a 50-percent chance -- up to 10 percent of this debris could be pulled in by Earth's gravity over the following days, they said. - 'Like a bullet' - Earth's atmosphere would protect the surface from the millimetre- to centimetre-sized lunar rocks, Weigert said. 0.04-2.54 But these meteors could be capable of destroying some satellites -- and there are expected to be a lot more of those orbiting the planet by 2032. "A centimetre-sized rock travelling at tens of thousands of metres per second is a lot like a bullet," Wiegert said. In the days after the impact, there could be more than 1,000 times the normal number of meteors threatening Earth's satellites, he added. Meanwhile, those of us on the ground would be treated to a "spectacular" meteor shower lighting up the night sky, the study said. But the current odds of a direct hit on the near side of the Moon remain at just two percent, Wiegert emphasised. The asteroid is not expected to be visible again until 2028, so the world will have to wait to find out more. If a direct hit is eventually found to be likely, humanity probably has enough time to plan a mission to spare the Moon. "I'm sure it will be considered," Wiegert said. The asteroid is half as wide and has 10 percent of the mass of Dimorphos, which NASA's DART mission smashed into in 2022, successfully changing its trajectory. If 2024 YR4 is on a collision course with the Moon, it would be "a good target" for another test of our planetary defences, Wiegert said. But if not, trying to deflect something zooming so close to Earth could be a little "dangerous", he added. The preprint study, which published on the arXiv database last week, has been submitted to the Astrophysical Journal Letters. dl/gil
News.com.au
23-06-2025
- Science
- News.com.au
Earth's satellites at risk if asteroid smashes into Moon: study
If a huge asteroid smashes into the Moon in 2032, the gigantic explosion would send debris streaming towards Earth that would threaten satellites and create a spectacular meteor shower, according to researchers. Earlier this year there were briefly fears that the 60-metre-wide (200-foot-wide) asteroid called 2024 YR4, which is big enough to level a city, would strike Earth on December 22, 2032. It was given the highest chance -- 3.1 percent -- of hitting our home planet that scientists have ever measured for such a giant space rock. Subsequent observations from telescopes definitively ruled out a direct hit on Earth. However, the odds that it will crash into the Moon have risen to 4.3 percent, according to data from the James Webb space telescope in May. A new preprint study, which has not been peer-reviewed, is the first to estimate how such a collision could affect Earth. It would be the largest asteroid to hit the Moon in around 5,000 years, lead study author Paul Wiegert of Canada's University of Western Ontario told AFP. The impact would be "comparable to a large nuclear explosion in terms of the amount of energy released", he added. Up to 100 million kilograms (220 million pounds) of material would shoot out from the Moon's surface, according to a series of simulations run by the researchers. If the asteroid hit the side of the Moon facing Earth -- which is roughly a 50-percent chance -- up to 10 percent of this debris could be pulled in by Earth's gravity over the following days, they said. - 'Like a bullet' - Earth's atmosphere would protect the surface from the millimetre- to centimetre-sized lunar rocks, Weigert said. 0.04-2.54 But these meteors could be capable of destroying some satellites -- and there are expected to be a lot more of those orbiting the planet by 2032. "A centimetre-sized rock travelling at tens of thousands of metres per second is a lot like a bullet," Wiegert said. In the days after the impact, there could be more than 1,000 times the normal number of meteors threatening Earth's satellites, he added. Meanwhile, those of us on the ground would be treated to a "spectacular" meteor shower lighting up the night sky, the study said. But the current odds of a direct hit on the near side of the Moon remain at just two percent, Wiegert emphasised. The asteroid is not expected to be visible again until 2028, so the world will have to wait to find out more. If a direct hit is eventually found to be likely, humanity probably has enough time to plan a mission to spare the Moon. "I'm sure it will be considered," Wiegert said. The asteroid is half as wide and has 10 percent of the mass of Dimorphos, which NASA's DART mission smashed into in 2022, successfully changing its trajectory. If 2024 YR4 is on a collision course with the Moon, it would be "a good target" for another test of our planetary defences, Wiegert said. But if not, trying to deflect something zooming so close to Earth could be a little "dangerous", he added. The preprint study, which published on the arXiv database last week, has been submitted to the Astrophysical Journal Letters. dl/gil
The Guardian
06-05-2025
- Science
- The Guardian
What is the best time to see the Eta Aquariids meteor shower? Where and how can I see it in Australia?
Stargazers and early risers are in for a stellar show this week, with one of the biggest meteor showers in the southern hemisphere due to light up the skies. The meteors — called the Eta Aquariids – pass through the atmosphere every year, but 2025 is due to be particularly luminous as the moon won't be visible when they arrive. Here's how to catch a view of the celestial delight. What is the best time to see the Eta Aquariids meteor shower? The good thing is this particular meteor shower not only happens every year, but spans multiple days. McElroy said Wednesday 7 May would be the 'best day' for stargazers, with around two dozen meteors expected to pass per hour. But if it happens to be cloudy that day, you won't blink and miss it. The shower will continue to have a strong showing on the days preceding and following 7 May, before tapering off at the end of the month. 'Often these things are quite short-lived … it'll peak this week but it will continue,' McElroy said. Unfortunately, though, the best viewing window is between 3am and 5am – 'not for the faint-hearted or those who feel the cold'. If you happen to find yourself awake in the early dawn, though, you're in luck. Where can I watch the Eta Aquarrids? The Eta Aquariids can be viewed anywhere in the world, but they are best seen from the southern hemisphere where the shower will rise in the pre-dawn, darkened sky. In Australia, every state and territory will be able to witness the display. But McElroy said areas with the lowest light pollution would have the greatest visibility – such as Uluru and remote parts of the Northern Territory. 'These things aren't enormously bright, so you want to get away from as much light pollution as you can,' McElroy said. 'If you're in the city, get into the suburbs and away from bright lights.' Australia is lucky. McElroy said the best skies she has seen have been in Australia and in Chile because they look towards the centre of the Milky Way. 'In the northern hemisphere, you spend most of the year looking to the outskirts, but our winter happens to have the Milky Way's centre up in sky, and parts of Australia are very dark with a lot of protected [areas], like national parks,' she said. What are the best stargazing tips for how to watch? After heading outside, McElroy said you should first 'check the weather … That's the most important part. If it's cloudy you're not going to see anything, which is the curse of astronomy.' Then, turn off any porch or external lights and look away from bright street lights or your phone – which resets our daytime vision. 'Our eyes have a high dynamic range, and it takes 10 to 20 minutes to adjust to the night sky,' McElroy said. 'Grab a blanket, have a lie down and stay out there for an hour.' The constellation of Aquarius, where the meteors will appear, are in the north-east of the sky. Apps such as Star Mapper or Stellarium can help display the correct spot – but make sure you keep your brightness down. Why does the meteor shower occur? The Eta Aquariids are caused by Earth passing through debris left behind by Halley's Comet hundreds of years ago. Dr Rebecca McElroy, an astrophysicist from the University of Southern Queensland, said Earth passes through the debris field every year. As the bits of rock and dust hit the atmosphere at high speeds, they burn up and create bright streaks – creating what we call meteors. 'Meteors tend to look like a bright streak going by, like a shooting star, but more,' McElroy said. 'Occasionally they happen just randomly – when something of a high density is in our path.' It is known as 'Eta Aquariids' because of the part of the sky in which the meteors appear – which is near the star Eta Aquarii in the constellation of Aquarius.
