Connect with us

Science

WATCH: Fireball lights up sky over southern Ontario – CP24 Toronto's Breaking News

Published

 on


A meteor travelling an estimated 100,000 kilometers an hour is believed to have fallen into the earth’s atmosphere on Wednesday afternoon, resulting in multiple reports of a bright flash of light above Toronto and some streaks of fire in the sky across southern Ontario.

Around noon, a number of GTA residents reported seeing a fireball trail across the sky while others said they saw a large flash of nearly blinding light.

A camera on the CN Tower captured a split-second view of the flash of light across the Toronto skyline.

According to Dr. Denis Vida, a postdoctoral associate with the University of Western Ontario in their physics and astronomy department, a basket-ball sized meteor is believed to have entered the earth’s atmosphere at a 45-degree angle about 50 kilometers north of Syracuse, New York.

“We’re still waiting for the data to come in, but we think that the rough size of the object was probably in the order of 10 centimeters. And there’s still a lot of uncertainty.”

Vida said that it’s still too early to know if some pieces of the meteor made it to the ground or if the rock completely disintegrated upon entry. He said the large flash of light seen primarily over Syracuse would have been the result of the meteor being fragmented by the earth’s atmosphere.

“The flash was probably about 10 times brighter than the moon, the full moon,” he said. “At that moment the body either completely disintegrated or lost a lot of mass.”

As of 5 p.m., more than 80 reports were made to the American Meteor Society regarding a fireball seen on Dec. 2.

Those in the United States appeared to hear an audible boom following the event, Vida said.

“Someone called me and said that their house shook so much that they thought a tree fell on the house.”

Vida said that it’s not uncommon for meteors to enter the earth’s atmosphere and that people witness the event generally about once a month on a global scale.

“But locally. It’s much rarer.”

Let’s block ads! (Why?)



Source link

Continue Reading

Science

COVID-19 outbreak declared over at Coastal Gas Link work sites – CKPGToday.ca

Published

 on


2nd Floor 1810 3rd Ave.
Prince George, BC
V2M 1G4

Phone: (250) 564-8861
Newsroom: (250) 563-0111

We strive to achieve the highest ethical standards in all that we do. Our newsroom abides by the RTDNA Code of Ethics and Professional Conduct and follows the Canadian Press Stylebook

CKPGToday is a division of

Let’s block ads! (Why?)



Source link

Continue Reading

Science

Starlink satellite internet grants instant sign-up for eligible Canadians – IT World Canada

Published

 on


Depending on where they live, some Canadians can now sign up for Starlink’s satellite internet service.

Starlink, the new high-speed internet service provided by Elon Musk’s U.S.-based SpaceX firm, recently expanded its first public testing stage to Canada in these coordinates:

Province Latitudes (°N)
Alberta 49.0 – 51.5
British Columbia 48.4 – 51.7
Manitoba 49.0 – 51.1
New Brunswick 45.3 – 47.6
Nova Scotia 45.0 – 46.0
Ontario 43.1 – 51.0
Saskatchewan 49.6 – 50.7

But as Tesla North reported with notes from a Reddit thread, the updated Starlink registration website now asks users for their exact location as part of the invite process. Users within certain zones can sign up immediately. Currently, users in the following areas have seen the most success:

Province Latitudes (°N)
Ontario 44.52; 45.3; 44.1; 43.1
Manitoba 50.01
Alberta 50.71

Once approved, the eligible users can purchase the necessary Starlink hardware, which includes a satellite dish. The Satellite dish costs CA$649, and the service is CA$129 per month.

In a CBC article, some Starlink subscribers have reported service speeds of up to 150Mbps.

The Canadian Radio-Television and Telecommunication Commission (CRTC) granted Starlink’s operator, SpaceX, a Basic International Telecommunications Service (BITS) license in October 2020. The license allows SpaceX to provide telecommunication services in Canada but does not allow it to operate as an internet service provider within the issuing nation.

Related:

SpaceX granted basic telecom license in Canada

Starlink says it aims to establish a global network by using a massive constellation of satellites. The satellites float at low earth orbit, which both cuts down on signal latency and can more easily return to earth once they’re decommissioned. But stargazers are worried that the massive amount of satellites could obscure the view of the night sky.

The company has expressed a keen interest in providing internet service to rural and underserved areas in Canada and the United States. It’s currently extending beta testing offers in Canada, U.S. and U.K.

Starlink says it has launched 955 satellites so far.

Would you recommend this article?

Thanks for taking the time to let us know what you think of this article!
We’d love to hear your opinion about this or any other story you read in our publication. Click this link to send me a note →

Jim Love, Chief Content Officer, IT World Canada

#liker-thanksdisplay:none; padding:12px; background:#D2DDFF; border:1px solid #0010AA;

Let’s block ads! (Why?)



Source link

Continue Reading

Science

Researcher expands plant genome editing with newly engineered variant of CRISPR-Cas9 – Phys.org

Published

 on


Credit: CC0 Public Domain

Alongside Dennis van Engelsdorp, associate professor at the University of Maryland (UMD) in Entomology named for the fifth year in a row for his work in honey bee and pollinator health, Yiping Qi, associate professor in Plant Science, represented the College of Agriculture & Natural Resources on the Web of Science 2020 list of Highly Cited Researchers for the first time. This list includes influential scientists based on the impact of their academic publications over the course of the year. In addition to this honor, Qi is already making waves in 2021 with a new high-profile publication in Nature Plants introducing SpRY, a newly engineered variant of the famed gene editing tool CRISPR-Cas9. SpRY essentially removes the barriers of what can and can’t be targeted for gene editing, making it possible for the first time to target nearly any genomic sequence in plants for potential mutation. As the preeminent innovator in the field, this discovery is the latest of Qi’s in a long string of influential tools for genome editing in plants.

“It is an honor, an encouragement, and a recognition of my contribution to the science community,” says Qi of his distinction as a 2020 Web of Science Highly Cited Researcher. “But we are not just making contributions to the academic literature. In my lab, we are constantly pushing for improved gene editing out to scientists to make an impact.”

With SpRY, Qi is especially excited for the limitless possibilities it opens up for genome editing in and crops. “We have largely overcome the major bottleneck in plant genome editing, which is the targeting scope restrictions associated with CRISPR-Cas9. With this new toolbox, we pretty much removed this restriction, and we can target almost anywhere in the plant genome.”

The original CRISPR-Cas9 that kicked off the gene editing craze was tied to targeting a specific short sequence of DNA known as a PAM sequence. The short sequence is what the CRISPR systems typically use to identify where to make their molecular cuts in DNA. However, the new SpRY variant introduced by Qi can move beyond these traditional PAM sequences in ways that was never possible before.

“This unleashes the full potential of CRISPR-Cas9 genome editing for plant genetics and crop improvement,” says an excited Qi. “Researchers will now be able to edit anywhere within their favorable , without questioning whether the sites are editable or not. The new tools make genome editing more powerful, more accessible, and more versatile so that many of the editing outcomes which were previously hard to achieve can now be all realized.”

According to Qi, this will have a major impact on translational research in the gene editing field, as well as on crop breeding as a whole. “This new CRISPR-Cas9 technology will play an important role in food security, nutrition, and safety. CRISPR tools are already widely used for introducing tailored mutations into crops for enhanced yield, nutrition, biotic and abiotic stress resistance, and more. With this new tool in the toolbox, we can speed up evolution and the agricultural revolution. I expect many plant biologists and breeders will use the toolbox in different crops. The list of potential applications of this new toolbox is endless.”


Explore further

Genome editing to treat human retinal degeneration


More information:
Qiurong Ren et al, PAM-less plant genome editing using a CRISPR–SpRY toolbox, Nature Plants (2021). DOI: 10.1038/s41477-020-00827-4

Citation:
Researcher expands plant genome editing with newly engineered variant of CRISPR-Cas9 (2021, January 22)
retrieved 22 January 2021
from https://phys.org/news/2021-01-genome-newly-variant-crispr-cas9.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

Let’s block ads! (Why?)



Source link

Continue Reading

Trending