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Posts by dgmilewski

International Observe the Moon Night 2018

Posted on Oct 3, 2018 in Outreach

(click the flyer for a larger version)   On the evening of October 20th, 2018 from 7-9PM (weather permitting) come take part in the FREE International Observe the Moon Night (IOTMN) event on the roof (9th floor) of UCLA’s Mathematical Sciences Building. Speak with experts on the Moon, observe the Moon, Mars, and other celestial goodies first-hand with our telescopes, check out Lunar dust recovered from Apollo Missions, and learn more about the Moon and space! The UCLA Meteorite Gallery (the West Coast’s largest collection of meteorites) will also be open to visitors for this...

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December 07, 2018: Student Presentations

Posted on Sep 26, 2018 in Seminars

Talk Titles: TBA & TBA Abstracts: TBA & TBA  

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November 30, 2018: History Of The Solar Nebula And Planet Formation From Paleomagnetic Measurements Of Meteorites

Posted on Sep 26, 2018 in Seminars

Talk Title: History Of The Solar Nebula And Planet Formation From Paleomagnetic Measurements Of Meteorites Abstract: History of the solar nebula and planet formation from paleomagnetic measurements of meteorites A key stage in the formation of planetary systems is the formation of a protoplanetary disk containing a gaseous nebula. Theoretical studies suggest that magnetic fields mediated the global evolution of protoplanetary disks by transporting angular momentum and driving disk accretion. However, the nature and history of nebular magnetic fields have been poorly constrained. Here I review...

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November 16, 2018: TBA

Posted on Sep 26, 2018 in Seminars

Talk Title: TBA Abstract: TBA

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November 09, 2018: Earth Impacting Debris From Comets And Asteroids

Posted on Sep 26, 2018 in Seminars

Talk Title: Earth Impacting Debris From Comets And Asteroids Abstract: The results from ongoing surveys are described that have mapped out our annual meteor showers. Data can now be accessed online in near-real time, facilitating the monitoring of unusual meteor shower activity. Comets dominate the influx at meteoroid sizes < 10 cm. Above 10 cm, meteors are mostly from debris of asteroid collisions. Those meteoroid streams manifest on Earth very differently. So far, 36 meteorite falls have been observed by cameras, providing a first glimpse into where in the asteroid belt the collisions...

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November 02, 2018: Beyond Images: Getting Deeper Information From Terrestrial And Planetary Radar Sounding

Posted on Sep 26, 2018 in Seminars

Talk Title: Beyond Images: Getting Deeper Information From Terrestrial And Planetary Radar Sounding Abstract: Radio echo sounding is a uniquely powerful geophysical technique for studying the interior of ice sheets, glaciers, and icy planetary bodies. It can provide broad coverage and deep penetration as well as interpretable ice thickness, basal topography, and englacial radio stratigraphy. However, despite the long tradition of glaciological interpretation of radar images, quantitative analyses of radar sounding data are rare and face several technical challenges. These include attenuation...

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October 26, 2018: TBA

Posted on Sep 26, 2018 in Seminars

Talk Title: TBA Abstract: TBA

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October 19, 2018: Triggered Star Formation Inside The Shell Of A Wolf-Rayet Bubble As The Origin Of The Solar System

Posted on Sep 26, 2018 in Seminars

Talk Title: Triggered Star Formation Inside The Shell Of A Wolf-Rayet Bubble As The Origin Of The Solar System Abstract: A critical constraint on solar system formation is the high 26Al/27Al abundance ratio of 5 x 10-5 at the time of formation, which was about 17 times higher than the average Galactic ratio, while the 60Fe/56Fe value was about 2 x 10-8, lower than the Galactic value of 3 x 10-7. This challenges the assumption that a nearby supernova was responsible for the injection of these short-lived radionuclides into the early solar system. We show that this conundrum can be resolved if...

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October 12, 2018: 50th Division For Planetary Sciences Meeting Practice Talks

Posted on Sep 26, 2018 in Seminars

Practice Talks for the upcoming DPS meeting. Presentations given by: Ariel Graykowski: Fragmenting Comet 73P Man-To Hui: Ultra-Distant Activity in Comet C/2017 K2 (PANSTARRS) Dave Milewski: Continuous Monitoring of Active Asteroid P/2016 G1 (Pan-STARRS) ——————-ABSTRACTS—————- Ariel Graykowski 73P/Schwassmann-Wachmann 3 is a Jupiter-family comet that has been observed to fragment on several occasions since 2005. Fragment C (73P-C) is believed to be the primary component of the nucleus. Knowing the nucleus rotation period is...

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October 05, 2018: Ceres After Dawn: Impressions of a Dwarf Planet

Posted on Sep 26, 2018 in Seminars

Talk Title: Ceres After Dawn: Impressions of a Dwarf Planet Abstract: As we approach the end of Dawn’s 11 year mission to explore the uncharted worlds of the asteroid Vesta and the dwarf planet Ceres, join me in reflection of this overachieving spacecraft’s monumental legacy at Ceres. In the past three and a half years at Ceres, Dawn has observed anomalous ammonium, vexatious volcanoes, wandering water ice, freaky flows, effervescent evaporites, capricious carbon, and many more peculiarities. As your guide to Dawn’s extraordinary observations of Ceres, I will take you on a journey to...

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September 28, 2018: Two Freaks and a Conundrum

Posted on Sep 26, 2018 in Seminars

Talk Title: Two Freaks and a Conundrum Abstract: I will introduce three topics presented at the European Planetary Science Conference in Berlin this month: 1) Freak Asteroid 2) Freak Comet 3) Color Conundrum  

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October 20th, 2018: International Observe The Moon Night

Posted on Sep 7, 2018 in Featured, News

October 20th, 2018: International Observe The Moon Night

Please join us on the evening of Saturday 20 October, 2018 from 7 to 9 PM to participate and celebrate the 2018 edition of International Observe the Moon Night! We will have telescopes set up on the roof (9th floor) of UCLA’s Mathematical Sciences Building. It’s FREE, open to the public, and you’ll be able to observe the Moon (weather permitting). Specific information and details on International Observe The Moon Night hosted by UCLA’s Institute for Planets and Exoplanets can be found...

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December 08, 2017: Variability in Planetary Debris Discs Around White Dwarfs

Posted on Dec 4, 2017 in Seminars

Talk Title: Variability in Planetary Debris Discs Around White Dwarfs Abstract: A significant fraction of white dwarfs host remnant planetary systems, signposted by dusty debris discs fed by the tidal disruption of a rocky planetesimal. Some also contain gas, indicating that these are dynamically active systems. Repeated observations of these gas discs show variations on both long (decadal) and short (hourly) time-scales. I will present the first image of a gaseous debris disc, produced from fourteen years of spectroscopic monitoring of the prototypical SDSS J1228+1040, discuss possible...

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UCLA Astronomers Confirm the Very First Existence of an Asteroid Beyond Our Solar System

Posted on Nov 16, 2017 in Featured, General, News

UCLA Astronomers Confirm the Very First Existence of an Asteroid Beyond Our Solar System

CAPE CANAVERAL, Fla. — A newly discovered object from another star system that’s passing through ours is shaped like a giant pink fire extinguisher. That’s the word this week from astronomers who have been observing this first-ever confirmed interstellar visitor. “I’m surprised by the elongated shape – nobody expected that,” said astronomer David Jewitt of the University of California, Los Angeles, who led the observation team that reported on the characteristics. Scientists are certain this asteroid or comet originated outside our solar system. First...

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Exploring Your Universe 2017!

Posted on Oct 30, 2017 in Featured, News, Outreach

Exploring Your Universe 2017!

This year’s Exploring Your Universe (EYU) event at UCLA will be held on Sunday, November 5th, 2017.  Exploring Your Universe is an annual event held on the UCLA campus that includes science exhibitions, hands-on activities, demonstrations and experiments.  The event is free, open to the public, and promises an exciting time and a great learning experience for kids and adults alike. EYU 2017 will be held in UCLA’s Court of Sciences (located in South Campus) from 12PM-5PM. Nighttime activities will take place from 5PM-8PM (weather permitting). Parking is available in Parking...

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NASA’s Hubble Observes the Farthest Active Inbound Comet Yet Seen

Posted on Sep 28, 2017 in Featured, News

NASA’s Hubble Observes the Farthest Active Inbound Comet Yet Seen

UCLA’s Professor David Jewitt has most recently been involved in using NASA’s Hubble Space Telescope to image the farthest active inbound comet yet seen. The Comet that Came in from the Cold A solitary frozen traveler has been journeying for millions of years toward the heart of our planetary system. The wayward vagabond, a city-sized snowball of ice and dust called a comet, was gravitationally kicked out of the Oort Cloud, its frigid home at the outskirts of the solar system. This region is a vast comet storehouse, composed of icy leftover building blocks from the construction of...

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21 August 2017: The Great UCLA Eclipse

Posted on Aug 14, 2017 in Featured, News

21 August 2017: The Great UCLA Eclipse

Be sure to join us on Monday the 21st of August 2017 from 9:30AM to 11:30AM for ‘The Great UCLA Eclipse’ at UCLA’s Court of Sciences. A partial Solar Eclipse (~60 percent coverage) will be visible at UCLA and we would like to showcase exceptional research and our collaboration between Earth, Planetary, and Space Sciences, Astronomy Live! and The Optical Society (UCLA Chapter). Solar telescopes will be set up (weather permitting) for you to get to safely see this eclipse. FREE, FUN and open to the public! 300 Solar Eclipse glasses will be given away, first come, first...

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UCLA EPSS Prof. Margaret Kivelson Wins American Astronomical Society’s 2017 Gerard P. Kuiper Prize

Posted on Jun 23, 2017 in Featured, News

UCLA EPSS Prof. Margaret Kivelson Wins American Astronomical Society’s 2017 Gerard P. Kuiper Prize

UCLA EPSS Professor Margaret Kivelson Wins American Astronomical Society’s 2017 Gerard P. Kuiper Prize UCLA EPSS Professor Margaret Kivelson has won the 2017 Gerard P. Kuiper Prize, the highest award given to planetary scientists from the American Astronomical Society’s Division For Planetary Sciences. The Kuiper Prize is given for Outstanding Contributions to Planetary Science. From the AAS news release: “The Gerard P. Kuiper Prize for outstanding contributions to planetary science goes to Margaret G. Kivelson (University of California, Los Angeles, and University of...

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2016-2018 iPLEX Macau University of Science & Technology (MUST) Fellows

Posted on Jun 3, 2017 in General

The 2016-2018 iPLEX Macau University of Science & Technology (MUST) Fellows The Institute for Planets and Exoplanets has signed an international collaboratory effort to bring expert scientists from the Macau Institute of Science & Technology (MUST) to meet, interact, and work alongside scientists at the University of California at Los Angeles (UCLA) in order to foster growth among varying scientific fields and strengthen partnership amongst the scientific community. UCLA Fall 2016 Quarter (Sept-Dec ’16): Pictured (left): Lianghai Xi, (middle): Dr. David Jewitt, (right): Guoping...

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June 09, 2017: Planet X to be Discovered This Fall? Observational and Dynamical Constraints

Posted on Mar 31, 2017 in Seminars

Talk Title: Planet X to be Discovered This Fall? Observational and Dynamical Constraints Abstract: An undiscovered ~10 Earth mass planet in our solar system has been hypothesized to explain the orbital characteristics of about a dozen of the most distant Kuiper Belt Objects (KBOs) and Inner Oort Cloud Objects (IOCs). I’ll present the observational evidence for the planet and explain why the evidence is unlikely to be due to observational bias. I’ve used the known KBOs and IOCs as an input for over two thousand dynamical simulations run on the Northern Arizona University High...

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