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11 p.m. science and discovery: on the Moon, water is more abundant than we thought – Pledge Times

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This is certainly the news of the week in the field of science: Monday, October 26, NASA released a report revealing that the presence of water on the Moon was in fact more abundant and accessible than previously thought. until then. “It’s not about lakes or blocks of ice, warns Jean-Christophe Batteria, however, in the 11pm edition of Friday October 30. But these are water molecules trapped in dark interstices on the Moon. “

Where could this water come from? “Two theories have emerged, explains Jean-Christophe Batteria. EIt can originate from asteroids, as these are often loaded with ice. Or the flow of hydrogen ions coming from the Sun and which, when they reach the lunar rocks, form the famous H2O molecule. “ The presence of water on the Moon is, in any case, likely to simplify life on a lunar base.

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Hubble Space Telescope Explains Oddball Galaxy's Missing Dark Matter – SciTechDaily

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New data from the NASA/ESA Hubble Space Telescope provides further evidence for tidal disruption in the galaxy NGC 1052-DF4. This result explains a previous finding that this galaxy is missing most of its dark matter. By studying the galaxy’s light and globular cluster distribution, astronomers have concluded that the gravitational forces of the neighboring galaxy NGC 1035 stripped the dark matter from NGC 1052-DF4 and are now tearing the galaxy apart. This image, created from images forming part of the Digitized Sky Survey 2, shows the sky around NGC 1052-DF4. Credit: ESA/Hubble, NASA, Digitized Sky Survey 2; Acknowledgment: Davide de Martin

In 2018 an international team of researchers using the NASA/ESA Hubble Space Telescope and several other observatories uncovered, for the first time, a galaxy in our cosmic neighborhood that is missing most of its dark matter. This discovery of the galaxy NGC 1052-DF2 was a surprise to astronomers, as it was understood that dark matter is a key constituent in current models of galaxy formation and evolution. In fact, without the presence of dark matter, the primordial gas would lack enough gravitational pull to start collapsing and forming new galaxies. A year later, another galaxy that misses dark matter was discovered, NGC 1052-DF4, which further triggered intense debates among astronomers about the nature of these objects.

Now, new Hubble data have been used to explain the reason behind the missing dark matter in NGC 1052-DF4, which resides 45 million light-years away. Mireia Montes of the University of New South Wales in Australia led an international team of astronomers to study the galaxy using deep optical imaging. They discovered that the missing dark matter can be explained by the effects of tidal disruption. The gravity forces of the neighboring massive galaxy NGC 1035 are tearing NGC 1052-DF4 apart. During this process, the dark matter is removed, while the stars feel the effects of the interaction with another galaxy at a later stage.

Until now, the removal of dark matter in this way has remained hidden from astronomers as it can only be observed using extremely deep images that can reveal extremely faint features. “We used Hubble in two ways to discover that NGC 1052-DF4 is experiencing an interaction,” explained Montes. “This includes studying the galaxy’s light and the galaxy’s distribution of globular clusters.” 

Galaxy NGC 1052-DF4

This image presents the region around the galaxy NGC 1052-DF4, taken by the IAC80 telescope at the Teide Observatory in Tenerife, Spain. The figure highlights the main galaxies in the field of view, including NGC 1052-DF4 (center of the image) and its neighbor NGC 1035 (center left). Credit: M. Montes et al.

Thanks to Hubble’s high resolution, the astronomers could identify the galaxy’s globular cluster population. The 10.4-meter Gran Telescopio Canarias (GTC) telescope and the IAC80 telescope in the Canary Islands of Spain were also used to complement Hubble’s observations by further studying the data.

“It is not enough just to spend a lot of time observing the object, but a careful treatment of the data is vital,” explained team member Raúl Infante-Sainz of the Instituto de Astrofísica de Canarias in Spain. “It was therefore important that we use not just one telescope/instrument, but several (both ground- and space-based) to conduct this research. With the high resolution of Hubble, we can identify the globular clusters, and then with GTC photometry we obtain the physical properties.”

Globular clusters are thought to form in the episodes of intense star formation that shaped galaxies. Their compact sizes and luminosity make them easily observable, and they are therefore good tracers of the properties of their host galaxy. In this way, by studying and characterizing the spatial distribution of the clusters in NGC 1052-DF4, astronomers can develop insight into the present state of the galaxy itself. The alignment of these clusters suggests they are being “stripped” from their host galaxy, and this supports the conclusion that tidal disruption is occurring.

By studying the galaxy’s light, the astronomers also found evidence of tidal tails, which are formed of material moving away from NGC 1052-DF4. This further supports the conclusion that this is a disruption event. Additional analysis concluded that the central parts of the galaxy remain untouched and only about 7% of the stellar mass of the galaxy is hosted in these tidal tails. This means that dark matter, which is less concentrated than stars, was previously and preferentially stripped from the galaxy, and now the outer stellar component is starting to be stripped as well.

“This result is a good indicator that, while the dark matter of the galaxy was evaporated from the system, the stars are only now starting to suffer the disruption mechanism,” explained team member Ignacio Trujillo of the Instituto de Astrofísica de Canarias in Spain. “In time, NGC 1052-DF4 will be cannibalized by the large system around NGC 1035, with at least some of their stars floating free in deep space.”

The discovery of evidence to support the mechanism of tidal disruption as the explanation for the galaxy’s missing dark matter has not only solved an astronomical conundrum, but has also brought a sigh of relief to astronomers. Without it, scientists would be faced with having to revise our understanding of the laws of gravity.

“This discovery reconciles existing knowledge of how galaxies form and evolve with the most favorable cosmological model,” added Montes.

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This contraption, designed by a UVic alum, has been named one of 2020's best inventions – CBC.ca

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One man’s trash disposal invention might be your new kitchen treasure.

Victor Nicolov, University of Victoria engineering alumnus and CEO of B.C.-based Anvy Technologies, is the creator of a new home waste disposal system that was recently named by Time magazine as one of the top inventions of 2020.

Every year, the magazine releases a list of inventions, selected from nominations submitted by its staff that, according to a statement, “are making the world better, smarter and even a bit more fun.”

Nicolov’s product is also making it less smelly.

Called the Sepura system, it is similar in function to a garburator in that it is a garbage disposal unit that sits under the kitchen sink. Users simply toss food scraps into the sink and they go down the drain into the Sepura unit.

What is different about Nicolov’s unit is that it separates and collects solids in an odourless, sealed bin under the sink. LED lights indicate when the bin is full, at which point the contents can be easily removed and emptied for composting or collection.

“It’s a convenient way to get rid of food waste at home, but at the end of the day you are being eco-friendly about it,” said Nicolov during an interview on CBC’s All Points West

“The idea there is to keep as many solids out of the drain as possible,” he added.

An LED light on the front of the bin that collects solid waste indicates when the unit is full and ready to be emptied into compost or collections. (Anvy Technologies)

Not only is this easier on the environment, Nicolov said it can also be easier on household and municipal pocket books because solids are often behind problems that arise in plumbing and sewage systems.

In a news release from the engineering department at UVic, where Nicolov studied mechanical engineering, he is quoted saying the recognition from the iconic American magazine represents about two years of hard work by a whole team.

Until COVID-19 restrictions went into effect, Nicolov ran Anvy Technologies from an office on campus.

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Province Announces Windsor Essex Is Moving To Red 'Control' Status – windsoriteDOTca News

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Ontario Ministry of Health graphic

The province of Ontario announced Friday that Windsor Essex will be moving to Red, or “Control” status under the province’s COVID-19 response framework.

The changes will come into effect on Monday, November 30th 12:01am.

“The health and safety of all Ontarians is and will always be our top priority, that’s why we are following the advice of the Chief Medical Officer of Health and other health experts and making this adjustment today,” said Christine Elliott, Deputy Premier and Minister of Health. “Over the last week we have seen a shift in the trends of key public health indicators in regions across the province, and by moving [regions to new levels] in the framework, we can ensure that the necessary targeted measures are in place to stop the spread of the virus and allow us to keep our schools and businesses open.”

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Windsor-Essex joins four other regions moving to different levels under the framework. Haldimand-Norfolk Health Unit is moving to Orange-Restrict, and Hastings Prince Edward Public Health, Lambton Public Health, and Northwestern Health Unit are moving to Yellow-Protect.

The Red status is one status away from the province’s Lockdown status.

Red ‘Control’ status means the following, according to the province:

Changes from Orange – Restrict to Red – Control are marked in red.

Organized public events, social gatherings and religious services, rites and ceremonies

  • Limits for all organized public events and social gatherings:
    • 5 people indoors
    • 25 people outdoors
  • Limits for religious services rites or ceremonies, including wedding services and funeral services (apply regardless of the venue where held):
    • 30% capacity of the room indoors
    • 100 people outdoors

Restaurants, bars and other food and drink establishments

  • Maximum number of patrons permitted to be seated indoors is 10
  • Outdoor dining, take out, drive through, and delivery permitted, including alcohol
  • Require patrons to be seated; 2 metre minimum or impermeable barrier required between tables
  • Limit of 4 people may be seated together
  • Dancing, singing and the live performance of music is prohibited
  • Require contact information for all seated patrons
  • No buffet style service
  • Line-ups and patrons congregating outside venues managed by venue; 2 metres distance and face covering required
  • Face coverings required except when eating or drinking only
  • Personal protective equipment, including eye protection required when is a worker must come within 2 metres of another person who is not wearing a face covering
  • Establishments must be closed from 10 p.m. to 5 a.m.
  • Liquor sold or served only between 9 a.m. to 9 p.m.
  • No consumption of liquor permitted between 10 p.m. to 9 a.m.
  • Limit volume of music to be low enough that a normal conversation is possible
  • Screening of patrons is required, in accordance with instructions issued by the Office of the Chief Medical Officer of Health
  • Night clubs and strip clubs only permitted to operate as restaurant or bar
  • A safety plan is required to be prepared and made available upon request

Sports and recreational fitness facilities

  • Gyms and fitness studios permitted to be open with maximum of:
    • 10 people indoors or 25 people outdoors in classes; and
    • 10 people indoors in areas with weights or exercise equipment
  • No spectators permitted (exemption for parent and guardian supervision of children)
  • Increase spacing between patrons to 3 metres for areas of a sport or recreational facility where there are weights or exercise equipment and in exercise and fitness classes
  • Team sports must not be practiced or played except for training (no games or scrimmage)
  • Activities that are likely to result in individuals coming within 2 metres of each other are not permitted; no contact permitted for team or individual sports, with an exemption for high performance, including parasport, athletes.
  • Patrons may only be in the facility for 90 minutes except if engaging in a sport
  • Limit volume of music to be low enough that a normal conversation is possible; measures to prevent shouting by both instructors and members of the public
  • Face coverings required except when exercising
  • Require contact information for all members of the public that enter the facility
  • Require reservation for entry; one reservation for teams
  • Screening of patrons is required, in accordance with instructions issued by the Office of the Chief Medical Officer of Health
  • A safety plan is required to be prepared and made available upon request

Meeting and event spaces

  • Maximum of 10 people per facility indoors or 25 outdoors
  • Booking multiple rooms for the same event not permitted
  • Establishments must be closed from 10 p.m. to 5 a.m.
  • Liquor sold or served only between 9 a.m. to 9 p.m.
  • No consumption of liquor permitted between 10 p.m. to 9 a.m.
  • Require contact information for all seated patrons
  • Limit of 4 people may be seated together
  • Limit volume of music to be low enough that a normal conversation is possible
  • Screening of patrons is required, in accordance with instructions issued by the Office of the Chief Medical Officer of Health
  • A safety plan is required to be prepared and made available upon request

Retail

  • Fitting rooms must be limited to non-adjacent stalls
  • Line-ups and patrons congregating outside venues managed by venue; 2 metre distance required inside and outside; face covering also required while in line
  • Limit volume of music to be low enough that a normal conversation is possible
  • Screening of patrons is required, in accordance with instructions issued by the Office of the Chief Medical Officer of Health
  • For malls:
    • Maximum number of patrons permitted to be seated indoors in mall food court is 10
    • A safety plan is required to be prepared and made available upon request

Personal care services

  • Oxygen bars, steam rooms, saunas, bath houses and other adult venues, closed
  • Sensory deprivation pods closed (some exceptions)
  • Services requiring removal of face coverings prohibited
  • Require contact information from all patrons
  • Screening of patrons is required, in accordance with instructions issued by the Office of the Chief Medical Officer of Health
  • A safety plan is required to be prepared and made available upon request

Casinos, bingo halls and gaming establishments

  • Maximum of 10 people indoors or 25 people outdoors
  • Table games are prohibited
  • Liquor sold or served only between 9 a.m. to 9 p.m.
  • No consumption of liquor permitted between 10 p.m. to 9 a.m.
  • Require contact information from all patrons
  • Screening of patrons is required, in accordance with instructions issued by the Office of the Chief Medical Officer of Health
  • A safety plan is required to be prepared and made available upon request

Cinemas

  • Closed, except for:
    • drive-in cinemas
    • rehearsal or performing a recorded or broadcasted event, with restrictions:
      • Performers and employees must maintain 2 metre physical distance except for purposes of the performance
      • Singers and players of brass or wind instruments must be separated from any other performers by plexiglass or other impermeable barrier
  • A safety plan is required to be prepared and made available upon request

Performing arts facilities

  • Closed to spectators
  • Rehearsal or performing a recorded or broadcasted event permitted
    • Performers and employees must maintain 2 metre physical distance except for purposes of the performance
    • Singers and players of brass or wind instruments must be separated from any other performers by plexiglass or other impermeable barrier
  • Drive-in performances permitted
  • A safety plan is required to be prepared and made available upon request

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