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Dr. Phil Metzger @DrPhiltill
, 3 tweets, 2 min read Read on Twitter
Starting 10am New York time Saturday, @CosmoQuestX will stream 40 hours of SCIENCE to raise funds for science. It will be packed with guests (me in hour 13 😄), giveaways, great science, and ways to help.

Tune in: Twitch.tv/CosmoQuestX.
Learn more: Hangoutathon.org
ALL the science starts at 10am eastern US time (3 pm London) tomorrow (Saturday), but here's the description of my piece in hour 13. Please tune in as we discuss these space rocks and how they can change our world.
New plan. I will be live on the hangout-a-thon at 1am Eastern US time. Please join us!
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More from @DrPhiltill see all

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🙉 It took me far too long to realize why this cup filled to the rim & overflowed. I took it empty from the cabinet & pushed the middle button so it "should" have filled only half. Smh & lol. But there's cool physics here. (Btw, we use refillable k-cups for the environment.) /1
2/ See the interesting pattern in the coffee dust that leaked through the filter? This reminds me of asteroid impacts on the Moon because there are (what look like) primary and secondary impacts in this pattern.
3/ On the Moon, and asteroid hits at high velocity and blows out ejecta, which then strike the Moon at much lower velocities. Those are the secondary impacts. This drip pattern looks like a central impact site surrounded by places where the splashes went out and hit secondarily.
Read 6 tweets
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I'm choosing to annoy my fellow science nerds with this statement: I like the term "Dark side of the Moon." It was always "dark" in the sense that we lacked knowledge of it, not that it lacked sunlight. We allll know this & don't need to be nerd-splained, right? 😝 Also... /1
2/ ...the dark side of the Moon stopped being dark in 1959 when the Soviets flew Luna 3 around it and sent home some pictures. So the Moon used to have a dark side, but it doesn't any more. Right? 👊😅 But to be more accurate...
3/...really, we have barely explored either side at all. There's so much we don't know, even from the side where most of the missions landed. So shouldn't we say the Moon has twoooo dark sides: the Slightly Darker Dark Side, and the Slightly More Illuminated Dark Side?
Read 5 tweets
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Fun conversation at dinner tonight, since my oldest daughter Jess participated in pebble accretion research in the lab of @joshuacolwell and @astroaddie at @UCF two years ago. Josh, Addie and Julie Brisset are doing reduced gravity experiments to understand planet formation.../1
2/ The earliest part of planet-formation is well-understood, because molecules fuse to form dust (like snowflakes growing in a cloud), then the dust particles easily stick to each other by cohesion. But after they grow to the size of pebbles they will bounce instead of stick...
3/ This is the "bouncing barrier" of the planet formation process. So Josh, Addie, Julie, and others in their team have been devising experiments to study how gravel-sized particles can form ever-larger clumps until they are large enough for gravity to take over...
Read 16 tweets

Related threads

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2019 Thread in 2018!🔥🔥
1/ This thread is about ZIM ECONOMY. KUTI TIONESANE.
This is why I agree with Strive Masiyiwa that Zim economy is weighed down by SANCTIONS.
@daddyhope @finley_198 @Busisa74 @Auzqn @ShingiMunyeza @garweh2011 @VusiNyamazana @nelsonchamisa @xandatoto
2/ In 2017, I did an analysis of Zim economy. I used a methodology my old prof developed - a useful tool now being adopted by IMF & World Bank (they hitherto developed harmful SAPs for developing nations). Am not sure why my old prof hasn't won the Nobel Prize yet. But he will.
3/ This is how Zim economy grew from 1960-2008. FACTS ONLY.

-$1bln: 1960
-$1.3bln: 1965 (UDI)
-$1.8bln: 1970
-$5.1bln: 1979 (End of Rhodesia)
-$6.6bln: 1980
-$5.6bln: 1985
-$8.7bln: 1990
-$6.8bln: 1999
-$6.6bln: 2000
-$6.78bln: 2001 (Sanctions) ↓
-$5.5bln: 2005
-$4.4bln: 2008
Read 56 tweets
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"...Mr. Trump received the equivalent today of at least $413 million from his father’s real estate empire, starting when he was a toddler and continuing to this day."

Oh no, they've got him this time! BABY TRUMP COMMITTING TAX FRAUD!

nytimes.com/interactive/20…
“The New York Times’s allegations of fraud and tax evasion are 100 percent false, and highly defamatory,”

" “There was no fraud or tax evasion by anyone."

Especially not toddler Trump.
"The Times’s findings raise new questions about Mr. Trump’s refusal to release his income tax returns"

lol keep beating that dead horse, it sure worked in 2016

"According to tax experts, it is unlikely that Mr. Trump would be vulnerable to criminal prosecution" yeah lol ok then
Read 23 tweets
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With the upcoming Neil-Gaiman-orchestrated "Dreaming" line at DC comics, I thought it might be time to revisit Neil Gaiman's wonderful "Sandman."

(Sandman: Overture #1.)
It's funny, I was just thinking today about the late sixties paranoia about cultural psychosis and insanity.

Modern pop culture is similarly fixated on the idea of insanity rippling through the popular unconscious.

"Legion", "Westworld", etc.

(Sandman: Overture #2.)
It's almost surprising that it took as long as it did for Gaiman to write for "Doctor Who."

Gaiman's abstract/symbolic cosmos is very much in keeping with Russell T. Davies' approach to concepts like "the Time War."

(Sandman: Overture #2.)
Read 299 tweets
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“What to the Slave Is the Fourth of July?” Frederick Douglass July 5, 1852 Mr. President, Friends and Fellow Citizens:

He who could address this audience without a quailing sensation, has stronger nerves than I have. I do not remember ever to have appeared as 1/
a speaker before any assembly more shrinkingly, nor with greater distrust of my ability, than I do this day. A feeling has crept over me, quite unfavorable to the exercise of my limited powers of speech. 2/
The task before me is one which requires much previous thought and study for its proper performance. I know that apologies of this sort are generally considered flat and unmeaning. I trust, however, that mine will not be so considered. 3/
Read 254 tweets
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Thread for tracking bad accounting in the DJT campaign expenditures for 2015-2016. I will add to this thread as I find them.

Notes: Schiller batched his expense reports. It’s possible to track his McDonalds’ purchases for campaign events by city, but not by DATE.
In May-June 2015, everybody in Iowa & NH seemed to require all campaigns to pre-pay for events. Makes sense: they know campaigns become deadbeats in 12 hours. Short notice rentals. Got soaked for NH campaign office.
Campaign held a rally at Phoenix Convention Center (owned by City of Phoenix) on 11 JUL 2015. Campaign double-paid for event: $7803 on 27JUL to City of Phoenix; $7803 on 31JUL to Phoenix Convention Center. Weird. A double pay like this may indicate a skim/diversion.
Read 74 tweets
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Today's thread

Measurement of time.
How current calendars can't match ancient Hindu timekeeping.

Why a day isn't always 24 hours long

Why a year doesn't have 365.25 days

#science #astronomy #Time
1/n
How long does a day last everyday? 24 hours? Wrong.

We define day as the time taken by Earth to complete one rotation around its axis.
But with respect to what is the measurement made? 2/n
Since Earth is also revolving around Sun while it is rotating, it needs to rotate a little extra when rotation is measured w.r.t. sun (solar day) than a distant star (sidereal day)
3/n
Read 10 tweets

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