A Twitter Revolution?
Timothy Patrick McCarthy is a Lecturer on History and Literature, Adjunct Lecturer on Public Policy, and Director of the Human Rights and Social Movements Program at the Carr Center for Human Rights Policy at the Harvard Kennedy School. He also teaches in the Committee on Degrees in Studies of Women, Gender, and Sexuality in the Faculty of Arts and Sciences.
A historian of social movements, Dr. McCarthy graduated with honors from Harvard College and received his Ph.D. in History from Columbia University, where he completed his dissertation under the direction of Eric Foner. Dr. McCarthy's research agenda focuses on the relationship between human rights and social movements in three main areas: race relations and civil rights; LGBT politics, policy, and advocacy; and modern-day slavery and human trafficking.
McCarthy has published two books, The Radical Reader: A Documentary History of the American Radical Tradition (New Press, 2003) and Prophets of Protest: Reconsidering the History of American Abolitionism (New Press, 2006), and his third book, Protest Nation: The Radical Roots of Modern America, is forthcoming from the New Press in 2010.
An outspoken and respected leader in the lesbian, gay, bisexual, and transgender community, Dr. McCarthy was a founding member of Barack Obama's National LGBT Leadership Council, serves on the Board of the Harvard Gay and Lesbian Caucus, and, in 2009, delivered Harvard's prestigious Nicholas Papadopoulos Lecture, entitled "Stonewall's Children: Life, Loss, and Love after Liberation." He lectures widely on topics ranging from history and literature to politics and human rights.
Tim McCarthy: The one thing that I would sort of caution is that I do think that the new online or virtual kind of political culture does have its limitations. Certainly the swiftness with which we understand and have information and share information is a great advantage, that we just know more and we know it quicker. We see more and we see it quicker. We're able to document our own witness. But the other thing that it does, and I think that this is crucial, is that it takes away, or it robs us in some sense, of the space that we share physically, right? If we imagine ourselves as part of a community, that's powerful and that's important to have those kinds of virtual or imagined connections to other people.
But it's also important to be in the basement of a church, working out what you're going to do at the protest, to see each other, to hug each other, to hold hands and sing songs like they did in the civil rights movement, right? To be physically in the same space like those young queer activists were at Stonewall in June of 1969, right? The gathering of physical momentum as an engine for protest I think is very important, to be face to face with somebody. You can only do so much virtually and online. You can do a lot, and I think it's certainly given us advances that we have to take into consideration.
I think one of the reasons why you know, to bring it back into the realm of mainstream politics one of the reasons why Barack Obama was so successful was because he like Howard Dean but to a much greater and more sophisticated effect marshaled and mastered the new media technologies as a way to generate political momentum and political interest.
And the same is true of social movements as well. But I do worry, though and the Obama campaign's a perfect example you know, there were people that I worked with for over a year in the Obama campaign that I didn't meet until the inauguration, or that I didn't meet until the election. Well, David Plouffe, who I met at Harvard this spring. But, you know, obviously David Plouffe was someone who was in my world, and I in his, for many -- much more him in mine than I in his but we were part of each other's worlds virtually for two years or a year and half. And that was great, but I met him for the first time in April, which was fine. He's a good guy. I like spending time with him, and I do think that there's something about this kind of new media technology that robs us of that.
And when we think about the great successes of the civil rights movement and of the labor movement and of the women's movement and the abolitionist movement and all the great social movements that have transformed this nation and other nations, a lot of them were the results of meetings, of coming together in common spaces and organizing together, of having fights face to face, of holding one another accountable by saying "are you going to be there?" And you saw this in the campaign. And as much as, you know, a lot of it took place virtually, you know, we also went up to New Hampshire every weekend and we knocked on doors, and we stood in the middle of intersections with Obama signs, and we called people, right? And we used a lot of the old-fashioned tools of community and political organizing that had worked for many, many years. And so I think we need to not just in our rush to the future, in our sort of exuberance about all of this new media in the 21st century, I hope that we don't forget that there are some good old-fashioned community organizing strategies that got Barack Obama to a place that he could even think about running for president and having the kind of online campaign that was so, so successful and that has, quite frankly, redefined politics.
Recorded on: July 1, 2009
While it's clear that media drives politics, "there's a more complicated and symbiotic relationship" between social media technologies and popular revolts.
Dominique Crenn, the only female chef in America with three Michelin stars, joins Big Think Live this Thursday at 1pm ET.
The images and our best computer models don't agree.
A trio of intriguing galaxy clusters<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQzNDA0OS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxNTkzNzUyOH0.0IRzkzvKsmPEHV-v1dqM1JIPhgE2W-UHx0COuB0qQnA/img.jpg?width=980" id="d69be" class="rm-shortcode" data-rm-shortcode-id="2d2664d9174369e0a06540cb3a3a9079" data-rm-shortcode-name="rebelmouse-image" />
The three galaxy clusters imaged for the study
Mapping dark matter<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="d904b585c806752f261e1215014691a6"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/fO0jO_a9uLA?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>The assumption has been that the greater the lensing effect, the higher the concentration of dark matter.</p><p>As scientists analyzed the clusters' large-scale lensing — the massive arc and elongation visual effects produced by dark matter — they noticed areas of smaller-scale lensing within that larger distortion. The scientists interpret these as concentrations of dark matter within individual galaxies inside the clusters.</p><p>The researchers used spectrographic data from the VLT to determine the mass of these smaller lenses. <a href="https://www.oas.inaf.it/en/user/pietro.bergamini/" target="_blank" rel="noopener noreferrer">Pietro Bergamini</a> of the INAF-Observatory of Astrophysics and Space Science in Bologna, Italy explains, "The speed of the stars gave us an estimate of each individual galaxy's mass, including the amount of dark matter." The leader of the spectrographic aspect of the study was <a href="http://docente.unife.it/docenti-en/piero.rosati1/curriculum?set_language=en" target="_blank">Piero Rosati</a> of the Università degli Studi di Ferrara, Italy who recalls, "the data from Hubble and the VLT provided excellent synergy. We were able to associate the galaxies with each cluster and estimate their distances." </p><p>This work allowed the team to develop a thoroughly calibrated, high-resolution map of dark matter concentrations throughout the three clusters.</p>
But the models say...<p>However, when the researchers compared their map to the concentrations of dark matter computer models predicted for galaxies bearing the same general characteristics, something was <em>way</em> off. Some small-scale areas of the map had 10 times the amount of lensing — and presumably 10 times the amount of dark matter — than the model predicted.</p><p>"The results of these analyses further demonstrate how observations and numerical simulations go hand in hand," notes one team member, <a href="https://nena12276.wixsite.com/elenarasia" target="_blank">Elena Rasia</a> of the INAF-Astronomical Observatory of Trieste, Italy. Another, <a href="http://adlibitum.oats.inaf.it/borgani/" target="_blank" rel="noopener noreferrer">Stefano Borgani</a> of the Università degli Studi di Trieste, Italy, adds that "with advanced cosmological simulations, we can match the quality of observations analyzed in our paper, permitting detailed comparisons like never before."</p><p>"We have done a lot of testing of the data in this study," Meneghetti says, "and we are sure that this mismatch indicates that some physical ingredient is missing either from the simulations or from our understanding of the nature of dark matter." <a href="https://physics.yale.edu/people/priyamvada-natarajan" target="_blank">Priyamvada Natarajan</a> of Yale University in Connecticut agrees: "There's a feature of the real Universe that we are simply not capturing in our current theoretical models."</p><p>Given that any theory in science lasts only until a better one comes along, Natarajan views the discrepancy as an opportunity, saying, "this could signal a gap in our current understanding of the nature of dark matter and its properties, as these exquisite data have permitted us to probe the detailed distribution of dark matter on the smallest scales."</p><p>At this point, it's unclear exactly what the conflict signifies. Do these smaller areas have unexpectedly high concentrations of dark matter? Or can dark matter, under certain currently unknown conditions, produce a tenfold increase in lensing beyond what we've been expecting, breaking the assumption that more lensing means more dark matter?</p><p>Obviously, the scientific community has barely begun to understand this mystery.</p>
Scientists have found evidence of hot springs near sites where ancient hominids settled, long before the control of fire.
Astronomers spot an object heading into Earth orbit.
Minimoons<p>Scientists have confirmed just two prior minimoons. One was <a href="https://en.wikipedia.org/wiki/2006_RH120" target="_blank">2006 RH120</a>, which orbited us from September 2006 to June 2007. The other was <a href="https://en.wikipedia.org/wiki/2020_CD3" target="_blank">2020 CD3</a>, which got stuck in the 2015–2016 timeframe, and is believed to gotten away in May 2020.</p><p>2020 SO, the new kid on the block, is expected to arrive in October 2020 and pop out of orbit in May 2021.</p><div id="37962" class="rm-shortcode" data-rm-shortcode-id="f4c0fc8a2cba6536ea4cd960ebed3e6e"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1307729521869611008" data-partner="rebelmouse"><div style="margin:1em 0">Asteroid 2020 SO may get captured by Earth from Oct 2020 - May 2021. Current nominal trajectory shows shows capture… https://t.co/F5utxRvN6Z</div> — Tony Dunn (@Tony Dunn)<a href="https://twitter.com/tony873004/statuses/1307729521869611008">1600621989.0</a></blockquote></div>
Identifying 2020 SO<p>The first clue 2020 SO isn't your ordinary asteroid is its exceptionally low velocity. It's traveling much more slowly that a typical asteroid — their <a href="https://www.lpi.usra.edu/exploration/training/illustrations/craterMechanics/" target="_blank">average rate of travel</a> <a href="https://www.lpi.usra.edu/exploration/training/illustrations/craterMechanics/" target="_blank" rel="noopener noreferrer"></a>is 18 kilometers (58,000 feet) per second. Even <a href="https://en.wikipedia.org/wiki/Moon_rock" target="_blank">moon rocks</a> sent careening into Earth orbit by impacts on the lunar surface outpace pokey 2020 SO.</p><p>For another thing, 2020 SO has an orbital path very similar to Earth's, lasting about one Earth year. It's also just slightly less circular than our own orbit, from which it's barely tilted off-axis.</p><p>So, what is it? <a href="https://cneos.jpl.nasa.gov/ca/" target="_blank">NASA estimates</a> that the object has dimensions very reminiscent of a discarded Centaur rocket stage from the <a href="https://en.wikipedia.org/wiki/Surveyor_2" target="_blank" rel="noopener noreferrer">Surveyor 2 mission</a> that landed an unmanned craft on the moon. Back in the day, rocket stages were jettisoned as craft were aimed toward their desired position. This stuff, if released high enough, remains in space. It appears that this Centaur rocket, launched in September 1966, is now making its way back homeward, at least for a little bit.</p><p>When 2020 SO arrives at its closest point in December, the rocket is expected to be about 50,000 kilometers from Earth. Its next closest approach is much further: 220,000 kilometers, in February 2010.</p><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQzMDk3NC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYyODg1MTQ1MX0.HGknDwqp0GmeuczKY_AS7vrPG7KMFUc_XO95tNoI2xo/img.jpg?width=980" id="e5cda" class="rm-shortcode" data-rm-shortcode-id="85eb1f790d8c3ee5b261f7ba13eaa5e1" data-rm-shortcode-name="rebelmouse-image" alt="Centaur rocket stage" />
Centaur rocket stage
What we may be able to learn<p>Earthly space programs being as young as they are, scientists would love to know what's happened to our rocket during a half century in space.</p><p>While 2020 SO won't get close enough to drop into our atmosphere, its slow progress has scientists hopeful that they'll still get some kind of a decent look at it.</p><p>Spectroscopy may be able to reveal what the rocket's surface is like now — has any of its paint survived, for example? Of course, being out in space, it's likely to have been hit by lots of dust and micrometeorites, so the current state of its surfaces is also of interest. Experts are curious to know how reflective the rocket is at this point, valuable information that can help planners of future long-term missions anticipate how well a craft out in space for extended periods will remain able to reflect sunlight.</p>
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