SARS-CoV-2, the Coronavirus that causes COVID-19 and is responsible for the 2020 pandemic, is known to enter cells via the ACE2 receptor (see this video on the Renin-Angiotensin system).
In addition to ACE2, there are other receptors that either facilitate entry into cells (making the virus more infectious) or increase its pathogenicity (causing more severe symptoms).
Donald Trump does not care for science. Any science ...
When the California minister for the environment confronted him with some facts about Climate Change, he said "It will start getting cooler ... you just watch". The minister said: "I wish science agreed with you". Trump's response? "I don't think science knows, actually ..."
For those wondering what is QAnon, and why it is so nefarious, here is an overview.
QAnon is an unfounded conspiracy theory claiming that a cabal of Satan-worshiping pedophiles is running a global child sex-trafficking ring and plotting against Donald Trump.
I have been using the FYSETC S6 V1.2 3D printer board as my telescope controller for a few years.
This is a feature rich board that has the following advantages:
Both version 1.2 and 2.0 work well with OnStep.
Slashdot is a news web site for technology and nerds alike that has been active for over two decades.
The site changed ownership a few times. The current owners employed young moderators who were not around when the site was still privately owned and managed by the same team who created it.
One glaring example of the disconnect between the current moderators, and the site's history is the total ignorance on what the icons and logs attached to stories mean.
Here are a few examples from recent months:
Years ago, I wrote about using syslog-ng on OpenWRT for logging.
Times have change, and OpenWRT has evolved. With the current stable version (19.07.3), syslog-ng is no longer the preferred method. Instead, I have found that rsyslog works better. In this article, I describe how to install and configure rsyslog.
The new moon for the month of Shawwal 1441 AH has only been sighted in several countries in Africa.
For example, Mauritania claimed that declaring the end of Ramadan, and the start of Eid Al Fitr was based on multiple confirmed sighting, also claiming that the number of witnesses exceeds 40 people, in various places in the country.
The same thing happened in Senegal, Mali, Cote d'Ivoire, Niger, and Somalia.
Just like Ramadan 2019 Moon Sighting was fraught with false claims of sighting the crescent, which the courts in Saudi Arabia took at face value without basic confirmation against astronomy.
It seems that Ramadan 2020 is also set to suffer from the same faults.
If you look at this screen capture from Stellarium, a free astronomical planetarium program, you will see sunset on Wednesday the 22nd of April 2020, near Kitchener, Ontario, Canada.
Today, I saw the most bizarre thing.
But first, a backgrounder: here in Southern Ontario, there are two types of day time squirrels: the larger grey squirrel, and the tiny red squirrel. What the latter lacks in size, he makes for it by being very aggressive towards the larger greys, often chasing them off from several backyards at a time. The reds also object to humans being present by chattering in a bird like manner.
So what happened today?
For those of us who do astronomy, whether visually or for astrophotography, polar alignment is a procedure that we are familiar with, and have to do before every observing sessions, unless we have a permanent observatory.
Various little bits of information ...
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