Anonymous ID: 4dff51 Nov. 15, 2023, 6:59 a.m. No.19920193   🗄️.is 🔗kun   >>0218 >>0447 >>0608

NASA Astronomy Picture of the Day

Nov 15, 2023

 

M1: The Incredible Expanding Crab

 

Cataloged as M1, the Crab Nebula is the first on Charles Messier's famous list of things which are not comets. In fact, the Crab Nebula is now known to be a supernova remnant, an expanding cloud of debris from the death explosion of a massive star. The violent birth of the Crab was witnessed by astronomers in the year 1054. Roughly 10 light-years across, the nebula is still expanding at a rate of about 1,500 kilometers per second. You can see the expansion by comparing these sharp images from the Hubble Space Telescope and James Webb Space Telescope. The Crab's dynamic, fragmented filaments were captured in visible light by Hubble in 2005 and Webb in infrared light in 2023. This cosmic crustacean lies about 6,500 light-years away in the constellation Taurus.

 

https://apod.nasa.gov/apod/astropix.html?

Anonymous ID: 4dff51 Nov. 15, 2023, 7:13 a.m. No.19920257   🗄️.is 🔗kun

Mysterious 'explosive' sound from a 'UFO' over New England shook homes and rattled windows - and a Harvard physicist believes he has located the source

UPDATED: 12:59 EST, 13 November 2023

 

New Englanders reported hearing a 'strange' sound on the evening of October 20, which shook homes and raddled windows for at least 12 seconds.

 

Harvard University's astronomical instruments recorded the noise, finding it did not resemble anything from birds, aircraft or wind.

 

Alien-hunting physicist and Harvard's former head of astronomy Avi Loeb to investigate the source of the 'unidentified flying object.'

 

Loeb determined the UFO released explosive energy equivalent to 2,400 pounds of TNT detected from over a 10-mile radius.

 

The sound was moving 1,115 feet per second when an observatory in Cambridge, Massachusetts detected it.

 

Loeb determined that the energy source likely came from an exploding mile-wide meteor during the Orionid shower that peaked in the area on October 21.

 

Loeb's Galileo Project observatory recorded the boom using a giant, ultra-sensitive microphone he installed on the roof of a building on Harvard's campus.

 

Andy Mead, who designed and constructed the system, contacted Loeb on October 21 after noticing something strange picked up by the sensors.

 

'I started getting messages this morning about a 'viral' sound that was heard throughout New England,' Mead shared in the note.

 

'Notably, the Mount Washington Observatory made a post about it as they had so many inquiries.

 

'That post now has over 4,000 reactions, 1,000 comments, and 751 shares, many of whom heard the sound and are following the story.'

 

Reports stemmed from both states, traveling through Mount Washington, Boothbay Harbor, Maine and Sturbridge, where people heard an explosion over their homes around 7:43pm ET on October 20.

 

Mead told Loeb he checked AMOS, finding 'a very interesting sound' that lasted for 12 seconds.

 

Loeb then created a website to crowdsource reports from other locations that could constrain the distance of the mystery source.

 

'Given the mission of the Galileo Project, one question came to mind: 'Is this an Unidentified Anomalous Phenomenon (UAP)? Are aliens using advanced technologies near Earth,' the physicists shared in a Medium post.

 

The signal was short but produced a sudden release of energy that sent a wave through Earth's atmosphere.

 

Loeb found that the pressure wave had weakened by the time AMOS detected the sound, as it was moving 1,115 feet per second.

 

'Multiplying this speed by the duration of the pulse, 12 seconds, implies a shell width of 4 kilometers [2.4 miles] for the blast wave, implying a distance of about 40 kilometers [24.8 miles] from the explosion,' he shared.

 

'At that distance, the measured pressure disturbance suggested an explosive energy release of 2.4 kilotons of TNT. The inferred energy and distance are reminiscent of meteors, which are known to make their own music at high altitudes.'

 

The Orionid Meteor Shower, which takes place every autumn when Earth passes through a stream of debris from Halley's Comet, peaked on October 21 with up to 25 shooting stars every hour.

 

Meteors, also known as shooting stars, come from leftover comet particles and bits from broken asteroids.

 

When comets come around the sun, the dust they emit gradually spreads into a dusty trail around their orbits.

 

Every year, Earth passes through these debris trails, which collide with our atmosphere and disintegrate to create fiery and colorful streaks in the sky.

 

Because this is an annual event, residents of New England reported hearing the same 'boom' in 2021, also on October 20.

 

https://www.dailymail.co.uk/sciencetech/article-12743881/UFO-new-england-mount-washington-observatory.html

Anonymous ID: 4dff51 Nov. 15, 2023, 7:21 a.m. No.19920283   🗄️.is 🔗kun   >>0447 >>0608

NASA's SPHEREx mission aims to map 450 million galaxies and 100 million stars

Nov 14, 2023

 

A new extraordinary NASA mission aims to map the sky in unprecedented detail and color.

 

Construction has started on SPHEREx, a new space-based observatory that will map over 450 million galaxies in addition to 100 million stars in our own galaxy, across 96 color bands in the infrared range of the electromagnetic spectrum. Over its planned two-year lifetime, SPHEREx will map the entire sky, producing two maps a year, according to NASA's Jet Propulsion Laboratory (JPL).

 

Scientists at JPL have been assembling the telescope in recent months, joining its various components together into its final form. "NASA's SPHEREx space telescope is beginning to look much like it will when it arrives in Earth orbit and starts mapping the entire sky," according to a JPL statement.

 

The observatory's three science missions of looking at three main periods of the lifetime of the universe are reflected in SPHEREx's full name - Specto-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer.

 

In the nearby universe, it will search for evidence of water and other molecules, like carbon monoxide, in disks around forming stars within our galaxy, according to Caltech. These molecules, necessary for the origin of life as we know it, would exist as ices within these systems.

 

Farther out in the very distant universe, SPHEREx will study when star and galaxy formation first began and the Epoch of Reionization – a time when the first stars and galaxies emitted enough energy to ionize every hydrogen atom in the universe. It will look at the collective light of these first galaxies in an attempt to understand how galaxy formation began and how it changed over time.

 

And in the infant universe, SPHEREx will attempt to understand inflation, or how the universe expanded exponentially in the first fraction of a second after its birth. SPHEREx will measure the imprint of inflation on the positions of galaxies and matter.

 

Some, however, may think this telescope looks a bit odd. Its cone shape looks more like something you may find around a dog's head after going to the vet. But Beth Fabinsky, the Deputy Project Manager of SPHEREx proudly points out, "These aren't cones of shame. They're SPHEREx's cones of fame!"

 

The cones serve a very important purpose – to shield the telescope from heat, or infrared radiation. SPHEREx's main telescope is shielded by three nested cones. Without this shielding, SPHEREx would be blinded by heat from Earth, the sun and the telescope itself. In addition, to do its observing, the telescope itself needs to be cooled down to a chilly -350 degrees F (-210 degrees C).

 

This allows SPHEREx to gaze at the very faint – and very distant – infrared universe. It will look at 96 precise wavelengths of light to produce its maps – a technique called spectroscopy.

 

SPHEREx, once completed, will be scheduled for launch on a SpaceX Falcon 9 rocket no earlier than June 2024.

 

https://www.space.com/nasa-spherex-map-450-million-galaxies

Anonymous ID: 4dff51 Nov. 15, 2023, 7:29 a.m. No.19920315   🗄️.is 🔗kun   >>0337 >>0353 >>0398 >>0447 >>0608

Electric Airship Funded By Google's Sergey Brin Set To Become The World's Largest Aircraft

Nov 11, 2023

 

LTA Research, supported by Google co-founder Sergey Brin, has revealed its electric airship prototype, Pathfinder 1, poised to become the world's largest aircraft. The unveiling ceremony of the supersized electric airship, marking the beginning of the flight testing campaign, took place in Silicon Valley on November 8, 2023.

 

On its LinkedIn account, the airship manufacturer said that “in the coming weeks and months, the team at LTA Research will put the proof-of-concept airship Pathfinder 1 through rigorous tests to ensure safety and reliability.”

 

The news about the flight testing campaign comes shortly after the Pathfinder 1 electric airship received its airworthiness certificate for flight testing from the US Federal Aviation Administration (FAA). It is worth noting that FAA’s experimental certificate for the Pathfinder 1 expires in September 2024.

 

Characteristics and the main idea

The Pathfinder 1, reminiscent of the Hindenburg airship, will be the world’s largest aircraft to take to the skies since the 1930s. This gigantic airship spans an impressive 400 feet (121.9 meters) in length, nearly twice the length of the world's longest aircraft, the Boeing 747-8 quadjet, which measures 250 feet long (76.2 meters).

 

Equipped with drone technology, including fly-by-wire controls, 12 electric motors, and lidar sensing, this airship holds the potential to transport substantial cargo over extensive distances, covering many hundreds of miles. The Pathfinder 1 is designed to reach a speed of up to 65 knots (120 km/h), although its initial flights will be at much lower speeds, according to Tech Crunch.

 

The company believes that electric airships can reduce the carbon footprint of current commercial aircraft and complement humanitarian aid. However, the company acknowledges that airships cannot replace aircraft but sees "a niche for airships to be part of the transportation architecture that reduces the carbon footprint of air travel.”

 

Commenting on the development of the Pathfinder 1 airship, LTA Research CEO Alan Weston told Tech Crunch:

 

“I’m excited about the potential of not building just one airship but laying the foundation for many airships to be built. The innovations and the technologies that we’re about to demonstrate have the potential to lay the foundation for a new industry.”

 

Future plans

LTA Research, actively engaged in airship development since 2016, is now gearing up to construct an even larger electric airship, the Pathfinder 3. This impressive airship is designed to measure approximately 600 feet in length (182 meters).

 

In fact, the company is working towards creating a family of airships. LTA Research intends to deploy them for disaster relief in areas with damaged roads and airports. Additionally, the company envisions using these airships for eco-friendly air travel.

 

https://simpleflying.com/lta-research-pathfinder-1-sergey-brin-largest-aircraft/