Mauritz Andersson

Regarding the feasibility of electric flight on batteries. The possible range is rather easy to compute. First let's compute the potential energy altitude associated with the specific energy of battery. Altitude=SpecificEnergy/EarthGravity

Mostly moved to Bluesky. Seems really taking off - great many scientists hanging around. bsky.app/profile/ztirua…

it's hard to say which is better, really

Latest NASA global temperature data. Earth has never been hotter since Homo sapiens discovered agriculture in the early Holocene. Likely even since 120,000 years ago. Fossil coal, oil and gas emissions caused it. We need to stop making it worse. Yes, we can if we want to. 🧵

RIGGED ELECTIONS IN GEORGIA 🇬🇪 I've spent the last 48 hours proving fraud in the Georgian elections. Let me show you the evidence in 2 charts. Chart 1: Russian tail...

Risken för att golfströmmen kollapsar har kraftigt underskattats, varnar 48 forskare de nordiska länderna. – Det är anmärkningsvärt att politiska ledare i Skandinavien inte tar detta på allvar, säger professor Johan Rockström. dn.se/sverige/forska…

It's better to understand the #AMOC risk than to be ignorant. I have videos of 50 minutes (my Alfred Wegener Medal lecture), 35 minutes and 15 minutes on our YouTube channel. This one is the shortest, for those with little time. Watch & share. youtu.be/mm_YZ2juQL4

If you want to know why scientists are so worried about the threat of #AMOC collapse, I try to explain it here: newyorker.com/magazine/2024/…

There's a bright comet headed our way. These things are notoriously unpredictable, but if Comet Tsuchinshan-ATLAS holds up, it could become a pretty, naked-eye object in early October. skyatnightmagazine.com/advice/comet-c…

A few months ago, I found the courage to watch the most important documentary ever: 20 Days in Mariupol. I thought I would be torn to pieces and cry. But it was worse. I was enveloped in emptiness. This led me to some difficult conclusions.

@PhysInHistory About 5. Nice to see DZ Albert’s book!

How many of these books do you have? ✍️

@elonmusk @Kristennetten When will you open source the algorithm, as your intention was earlier?

We are working on highlighting more banger content from (currently) small 𝕏 accounts. Our current algorithm shows too much from accounts that are big already.

Regeringens nedmontering av klimatomställningen fortsätter. Fossilfritt Sverige kan läggas ned vid nyår. Allt ska slås i spillror. Man blir så himla ledsen. aktuellhallbarhet.se/miljo/klimat/f…

The strongest evidence for dark matter: In hot plasma like the early Universe structure can't persist. Whenever matter is compressed by gravity it is driven apart by radiation pressure The resulting oscillations wash out every seed of over density. Galaxies never form 1/6

Truly frightening! “Climate models can’t explain 2023’s huge heat anomaly, we could be in uncharted territory. Planet warmed 0.2 °C more last year than #climate scientists expected.” Schmidt, climatologist & director of NASA’s Institute for Space Studies nature.com/articles/d4158…

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

🌡️ The Mediterranean Sea is hot, hot, hot! Yesterday’s average surface temp was a staggering 2.5°C above the 1991-2020 average. 🐠🌊 Marine life is under serious stress at these rising temperatures. How much longer can they survive? #ClimateChange #OceanHeat #SaveOurSeas 🌍

Global surface temperatures have increased by around 1.3C since preindustrial levels (1850-1900), with the vast majority of this (~1C) happening in the past 50 years as human emissions of CO2 and other greenhouse gases have accelerated.

Here is my scientific update @TEDTalks of the state of the Planet. The planet is changing faster than expected, hitting harder on people across the world. We must admit we have underestimated risks. Tipping points are approaching fast. Window open? Yes go.ted.com/YvVKR

The pieces are coming together for the world's largest optical telescope. German ceramics company SCHOTT just delivered the 949th and final (!) blank mirror segment for @eso's 39-meter telescope, under construction in Chile. eso.org/public/news/es…