# science

## April 9, 2021

Muon g-2 experiment finds strong evidence for new physics

Just sharing this video posted by Fermilab to dioide.zone on Peertube. This is a really nice, beginner friendly explanation.

The first results from the Muon g-2 experiment hosted at Fermilab show fundamental particles called muons behaving in a way not predicted by the Standard Model of particle physics. Announced on April 7, 2021, these results confirm and strengthen the findings of an earlier experiment of the same name performed at Brookhaven National Laboratory. Combined, the two results show strong evidence that our best theoretical model of the subatomic world is incomplete. One potential explanation would be the existence of undiscovered particles or forces. This video explains what a muon is, how the Muon g-2 experiment works, and the significance of this result.


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Also discuss further on IRC ##physics on freenode

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## April 9, 2021

Spacefarers: How Humans Will Settle the Moon, Mars, and Beyond : Writeup

6th April

Speaker: Christopher Wanjek Description: More than 50 years after the Apollo 11 moon landing, why is there so little human presence in space? Will we ever reach Mars? What will it take to become a multi-planet species, colonizing the Solar System and travelling to other stars?

With details here

Write up.

This was another really interesting, thought provoking lecture presented by Christopher Wanjek

The lecture started at about 15:30 in to the video after Frank has given his introduction, details of upcoming lectures and also an update on space news.

So some of the items covered were the cost and difficulty of getting off Earth in to space, then on to the Moon, very expensive. However once there, we are not out of the woods, the lunar surface is bombarded with radiation, the moon dust itself is toxic, growing food would need to be undertaken under artificial light, due to the radiation.

As the temperature on the moon can fluctuate between -200 and +200 F then one course of action for establishing some sort of presence on the moon would be the poles, where the temperature is a “cold, but workable” -50c.

We can harvest ice to produce Water, which can also be converted in to Hydrogen and Oxygen,

Christopher also then looked at how we can develop science on the Moon, Geology, Biology.

A look at gravity and how much humans rely on Gravity and how this can perhaps be created artificially.

The European Space Agency are looking at sending pods to the moon, build something before we go, I think it was also suggested we need to cover any buildings with moon dust, in order to provide full shielding from radiation. This apparently needs to be about 1 meter thick layer. Bare in mind that the dust is like Asbestos. Getting around and some transportation systems were suggested.

We may need to live in caves as these would be a constant temperature and a shield against radiation.

Space tourism could potentially be a huge industry As We are unable to have children on the Moon (something to do with gravity) then building cities may not be practical.

So on to Mars

Firstly getting there is dangerous, we are potentially exposed to radiation over a long period of time, once there the surface is still bombarded with radiation and there are dust storms to contend with, However it was suggested we could live in caves

One way of protecting us from radiation is to use Boron Nitriade, as boron can absorb secondary particles .

Mars surface has toxic components, so we may have to grow food under LED lights.

So lots to think about, lots of challenges a head so a great time to discuss more, study science and help work on the solutions needed.

A lot more was discussed including design of space suits,

Thank you for reading, worth checking out the video and the book Spacefarers by Christopher.

You can find more upcoming (monthly) lectures below.

## April 6, 2021

New Supercollider

Just had this from Symmetry Magazine [1], an article, discussing the plans for the new super collider [2]. Which will open up a whole new set of discoveries (well hopefully anyway). This could make a good discussion on Discourse [3] so I have added a new topic to discuss further [4]. If you are interested in studying physics then maybe try the Open University [5] or to learn more about the Large Hadron Collider see the CERN page on this [6].

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Other articles

**VIDEO ON THE LHC (5 mins) **

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## April 6, 2021

Parallel Worlds Probably Exist. Here’s Why

This is pretty cool, 20 min video.

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## April 3, 2021

Spacefarers: How Humans Will Settle the Moon, Mars, and Beyond

6th April

Speaker: Christopher Wanjek Description: More than 50 years after the Apollo 11 moon landing, why is there so little human presence in space? Will we ever reach Mars? What will it take to become a multi-planet species, colonizing the Solar System and traveling to other stars?

With details here

You can find more upcoming (monthly) lectures below.

http://www.stsci.edu/public-lectures

## March 26, 2021

Abundances in Przybylski's star ( per-zib-ill-skee)

This looks like a really interesting paper, published on Oxford Academic [1], examining, what appears to be the unusual composition of Przybylski's star [2]. According to Wikipedia* is in the “Southern constellation of Centaurus”

• I need a better academic references for this, which could be at [4].

There seems to be quite a few heavier element detected.

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Related papers

This may also be useful / relevant

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## March 25, 2021

Zooniverse Dark energy Explorers

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## March 8, 2021

Women in Chemistry

To celebrate International Women's day, Compound Chemistry have released a great poster celebrating the contribution women have made to Chemistry.

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## March 2, 2021

The Hubble Space Telescope: From Cosmological Conflict to Alien Atmospheres

Write up : 7th March 2021

This is a really interesting talk and overview of what the HST has undertaken since launch in 1990.

Some highlights

• Gravitational lensing, found galaxies magnified 50x and detection of galaxies 10x fainter.
• Precision cosmology & Hubble Constant calculations via several methods
• Exoplanet Atmospheres
• Exoplanets e.g 57 Pegasi
• Exoplanets found from transiting host star
• Planetary Atmospheres plus detection of organic molecules
• Earth size Exoplanets (Trappist 1b and 1c)

The talk also makes reference to academic papers, which can be easily searched for, so for example

With the last point in the list above, this paper was De Wit, et al 2016 Nature 537,69 – if you search for this you find arxiv 1006.01103 which is publication in the above journal 2016Natur 537

The 537 refers to the volume, and 69 is the first page of the article, in this case the article is on pages 69 to 72.

So using the references from the talk you can do further reading.

Well worth watching

Space Telescope Science Institute Public lectures The Hubble Space Telescope: From Cosmological Conflict to Alien Atmospheres Tue 2nd March 2021