List of All Articles with Tag 'pac'

The Geminids meteor shower began in a “violent catastrophe”, scientists have found. Every winter, the world is delighted by the meteor shower, which brings some of the most intense display of ‘shooting stars’. But that spectacle has been rivalled by its mystery. The Geminids are unusual in that most meteor showers are created when a comet leaves behind a tail of ice and dust – but the Geminids come from an asteroid, which do not usually leave behind a tail. Asteroids are chunks of rock and metal flying around in space. The Geminids appear to originate with one called 3200 Phaethon, which for an unexplained reason is affected by the Sun and leaves behind a stream across the night sky. “What’s really weird is that we know that 3200 Phaethon is an asteroid, but as it flies by the Sun, it seems to have some kind of temperature-driven activity,” said Jamey Szalay, research scholar at the Princeton University space physics laboratory and co-author on the paper. “Most asteroids don’t do that.” Attempts to solve that mystery have struggled in part because the meteor shower has only been observed from Earth. Now, however, researchers using Nasa’s Parker Solar Probe have been better able to examine the the Geminids. They suggest that a violent, catastrophic event gave rise to the meteor shower. That could have been a high-speed collision with another object in space, for instance, or a gaseous explosion. Some researchers have previously suggested that 3200 Phaethon might really be a comet, and that it lost its snow to leave behind just a rocky core that looks like an asteroid. But the new study makes clear that the origins of the meteor shower are much more dramatic than that. In an attempt to understand the meteor shower, researchers simulated three possible formation scenarios and then compared them with models based on observations from the Parker Solar Probe. That included a less violent scenario, a more violent one, and another that was in line with a comet. When they compared those scenarios with the actual observations, they found that the violent one was the most similar. That suggests that it was the result a collision or similar dramatic event. Researchers still do not know for sure what happened. But the new study helps narrow down the possibilities – as well as shedding more light on such events in space. The findings are published in a new article, ‘Formation, Structure, and Detectability of the Geminids Meteoroid Stream’, published in Planetary Science. Read More Watch live as astronauts step out of ISS for latest spacewalk Major finding boosts hope for finding alien life in our solar system Astronomers find rare planet circling two stars like Star Wars’s Tatooine

Phosphates have been found on Saturn’s moon Enceladus, in a new breakthrough discovery that boosts hopes for finding alien life in our solar system. It is the first time phosphorus has been found in an ocean beyond those on Earth, and marks a major development in our understanding of other ocean worlds. Enceladus is one of the most likely hopes for finding nearby extraterrestrial life. While its outside is wrapped in an ice crust, underneath is a global ocean that could be a home for alien life. Some of that ocean spews up and out of the surface of Enceladus, in the form of vast plumes. Scientists have been able to examine those plumes to better understand the ocean itself, including in the new study. Researchers in the latest study used data from the Cassini mission – which flew around Saturn and Enceladus – to find out what the oceans are made up of. They not only found phosphorus, but data suggested that it could be there are concentrations at least 100 times higher than in Earth’s oceans. What’s more, modelling based on the new data suggests the same could be true for other ocean worlds, potentially boosting the chances of alien life there, too. Phosphorus is not in itself evidence of life. But on Earth, the presence of phosphorus compounds in water are crucial for biological activity, and so it is a key part of evaluating whether a distant world might support life. Read More Astronomers find rare planet circling two stars like Star Wars’s Tatooine Elon Musk to launch biggest ever rocket after dramatic failure US government contradicts whistleblower’s claims of possible ‘non-human’ material

MADRID Spanish startup PLD Space has signed an agreement with France's Arianespace to develop joint services to launch

Marcelo Claure, the former chief operating officer of SoftBank Group Corp., has a new gig: executive chairman and

This summer's fireworks will have to compete with another spectacle in the night sky—a super buck moon.

The New York Jets signed plenty of former Green Bay Packers players, but that didn't stop them from adding someone to their defense.The New York Jets' big addition of the offseason is quarterback Aaron Rodgers, via a trade with the Green Bay Packers. Rodgers was far from the only Packe...

Quarterback Aaron Rodgers may be a New York Jet, but he was reportedly almost traded to the Denver Broncos last offseason.Since the opening night of the 2021 NFL Draft, those who followed the league waited to see when Aaron Rodgers would leave the Green Bay Packers, due in part to reports of his...

The Spurs are in a beginning stage of a rebuild, loading up on young players. With the benefit of hindsight, how did they do in last year's draft?The Spurs go into this off-season with a lot of hope. Obviously, they won the Victor Wembanyama sweepstakes. They also have a ton of first-round ...

SpaceX will attempt to launch its Mars-bound Starship rocket within the next eight weeks, Elon Musk has announced. It will be the second time SpaceX has attempted an orbital launch of its Starship system, which is the biggest and most powerful rocket ever developed. The first attempt at an orbital Starship launch took place in April, ending in a dramatic explosion just minutes after lift-off. Responding to a request on Twitter for an update on Starship, Mr Musk said the next test would be in “6 to 8 weeks”. The SpaceX boss has previously said that he hopes to build an entire fleet of Starship rockets in order to transport people and cargo across the Solar System. The private space company has already signed a mult-billion dollar deal with Nasa to use Starship for its Artemis programme, which aims to return humans to the Moon within the next few years. The launch site for the next orbital flight test will be from SpaceX’s Starship facility in Texas. If successful, the rocket will then complete a 90 minute journey around the Earth before touching down off the coast of Hawaii. No crew will be aboard the stainless steel Starship, which stands 120 metres tall and is capable of 16.7 million pounds of thrust – twice the power of the Saturn V rocket that took humans to the Moon. The size of the rocket, which has two main stages, means it is powerful enough to lift up to 250 tons into orbit, or carry 100 people on a trip to Mars. Read More Elon Musk eyes ‘highly habitable’ planet that’s ‘practically next door’

NBA Draft rumors: Pelicans looking to trade up for Scoot HendersonThe 2023 NBA Draft takes place on Thursday, June 22. The first-overall pick is a foregone conclusion, as Victor Wembanyama is expected to be selected by the San Antonio Spurs. The NBA Draft will officially begin with the second-over...

By Jonathan Stempel An Oregon jury on Monday found the utility PacifiCorp, a unit of Warren Buffett's Berkshire

A study detailing the habitability of a nearby exoplanet appears to have caught the attention of SpaceX boss Elon Musk. The tech billionaire has frequently spoken of his intention to transform humanity into a mult-planetary species through his private space firm, with plans to colonise Mars within the next few decades. The study of Proxima Centauri b, which sits within the so-called ‘Goldilocks Zone’ of the red-dwarf star Proxima Centauri, involved computer simulations to evaluate whether it can sustain liquid water that may harbour living organisms. “The major message from our simulations is that there’s a decent chance that the planet would be habitable,” Anthony Del Genio, a planetary scientist at the Nasa Goddard Institute for Space Studies said when the study was first published in 2018. The study concluded that Earth-sized planet is potentially the closest “highly habitable” planet to our Solar System, located 4.2 light-years away from the Sun. “Practically next door,” Mr Musk wrote in a tweet on Sunday, sharing the study. Proxima Centauri b has been the subject of several studies since it was first discovered in 2016, with astronomers attempting to assess whether it is capable of sustaining life. Similar to the Earth’s moon, the planet is “locked” due to gravitational forces, meaning that the same side of Proxima Centauri b always faces its parent star. Computational models suggest that the exoplanet’s circulating oceans and atmosphere act as an effective transfer of heat, so that its dark side is not permanently frozen. Despite its relatively close distance compared to other potentially habitable planets, travelling 4.2 light-years – or 40 trillion kilometres (25 trillion miles) – requires technology that is still in the conceptual stages of development. Nasa’s interstellar space probe Voyager 1, which was launched in 1977, would take 80,000 years to travel to Proxima Centauri, however the US space agency’s DEEP-IN programme aims to make the journey possible within a single lifetime. Scientists working on DEEP-IN claim that small crafts propelled by light could travel at speeds of up to 161 million kilometres per hour, and could reach the neighbouring star and exoplanet in 20 years. Mr Musk has frequently voiced his concerns about humanity’s long-term survival, claiming that setting up self-sustaining colonies on other planets is vital to ensure the continuation of our species. SpaceX has so far been at the forefront of these endeavours, developing its reusable Starship rocket with the intention of transporting people and cargo across the solar system. Read More Elon Musk refuses to pay Twitter’s Google bill Elon Musk claims AI will overtake humans 'in less than five years'