LecDem Blog

STEM News Tip: Coming soon to a sky near you! Comet 2022 E23 (ZTF)

Keep your eyes on the sky for the next few weeks, because we have a visitor. Comet C/2022 E3 (ZTF) was discovered last year by Palomar Observatory’s Zwicky Transient Facility (hence the name). Its orbit will bring it on its closest approach to the sun next week, and its closest approach to Earth at the beginning of February.

Right now, the comet can only be seen with a telescope; but by its closest approach, may be visible in the early morning sky with just a pair of binoculars.


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  1. PhysCon 2022!
  2. Distinguished Scholar-Teacher, Prof. Michelle Girvan
  3. Welcome to Autumn 2022 at UMD Physics!
  4. Blog Flashback: Birthday of CS Wu
  5. Demo Highlight: Air Table
  6. STEM News Tip: May’s Lunar Eclipse
  7. Demonstration Highlight: Reflecting Telescope Models
  8. STEM News Tip: Prof Sarah Eno elected AAAS Fellow
  9. Demonstration Highlight: Gravitational Lensing Model
  10. STEM News Tip: JWST Deployment
  11. Demonstration Highlight: More Fun with Polarization
  12. Demonstration Highlight: Fourier Synthesizer
  13. STEM News Tip: AIP Marks 90th Anniversary
  14. STEM News Tip: JWST Launch Delayed
  15. Demonstration Highlight: Electromagnetic Can Smasher
  16. Demonstration Highlight: Refraction
  17. STEM News Tip: Three New Articles In Science Education
  18. Demonstration Highlight: The Force on a Current in a Magnetic Field
  19. Demonstration Highlight: The Tesla Coil, Part Two
  20. STEM News Tip: Black In Physics Week 2021
  21. Demonstration Highlight: Tesla Coil, Part 1
  22. Demonstration Highlight: Parallel Plate Capacitor
  23. Demonstration Highlight: Friction on an Inclined Plane
  24. Demonstration Highlight: Rotating Chair and Bicycle Wheel Gyroscope
  25. Demonstration Highlight: Pulleys and Mechanical Advantage
  26. STEM News Tip: Updates on Fall Webinars and Virtual Talks from Scientific Organizations
  27. Demonstration Highlight: Elastic and Inelastic Collisions
  28. Demonstration Highlight: Double Cone
  29. Demonstration Highlight: Focusing Heat
  30. STEM News Tip: Coming events
  31. On the Physics of Work
  32. Demonstration Highlight: Buoyancy
  33. STEM News Tip: Hurricane Ida
  34. Welcome to Fall 2021!
  35. Demonstration Highlight: Rotating Chair and Weights
  36. Demonstration Highlight: Electric Fields
  37. STEM News Tip: Donna Hammer wins Board of Regents Award
  38. Demonstration Highlight: Pendula of Different Masses
  39. STEM News Tip: Keep An Eye Out For Meteors This Month!
  40. Demonstration Highlight: Galileo's Pendulum
  41. STEM News Tip: UMD Tech Spin-Offs Highlighted
  42. STEM News Tip: APS Public Engagement Webinars This Week
  43. Demonstration Highlight: Chaotic Pendula
  44. STEM News Tip: AIP Reports on National Survey of High School Physics
  45. Demonstration Highlight: Charged Balloon
  46. STEM News Tip: AIP Celebrates 90th Anniversary This Month
  47. STEM News Tip: Prof. Alicia Kollár Receives NSF Award
  48. Happy 145th birthday to Harriet Brooks
  49. Demonstration Highlight: Hookes Law and SHM
  50. STEM News Tip: NASA STEM Stars Program
  51. STEM News Tip: Scientific American on the Future of Particle Physics
  52. Demonstration Highlight: Astro Blaster
  53. STEM News Tip: AIP TEAM-UP Webinar With Dr. Jami V Miller & Prof Kelly Nash
  54. Demonstrations Highlight: Lenz's Law
  55. STEM News Tip: NASA EPDC Outreach Programs
  56. STEM News Tip: Earth Observation Hackathon
  57. Profiles in Physics @ UMD: Prof. Manuel Franco Sevilla
  58. Demonstration Highlight: Inertia of a Lead Brick
  59. STEM News Tip: #BlackInAstro Week 2021
  60. STEM News Tip: New Research on the Physics of Viruses
  61. Demonstration Highlight: Laser Waterfall
  62. Celebrating the birthday of Chien-Shiung Wu
  63. Demonstration Highlight: Cosmic Ray Detector
  64. STEM News Tip: Eclipse Season
  65. STEM News Tip: Non-Newtonian Fluids for Cookout Season
  66. Happy Graduation!
  67. Demonstration Highlight: Coănda Effect
  68. STEM News Tip: Raman Spectroscopy for COVID-19 Testing
  69. STEM News Tip: NMAAHC on Experiences of African Americans in STEM
  70. STEM News Tip: Physics Today features classic article on computers in physics education
  71. Demonstration Highlight: Diffusion Distribution Models
  72. STEM News Tip: APS Begins Public Engagement Webinar Series
  73. STEM News Tip: KiNET-X Experiment Launches from Wallops Tonight
  74. Demonstration Highlight: Projectile Motion - Pellet and Falling Target
  75. UMD Physics Summer Programs 2021
  76. STEM News Tip: Prof. Buonanno elected to NAS
  77. Demonstration Highlight: Hill Track
  78. STEM News Tip: Physics Today interviews Shirley Ann Jackson
  79. Demonstration Highlight: Rotating Rings
  80. STEM News Tip: Earth Day 2021
  81. Demonstration Highlight: Tyndall's Experiment
  82. STEM News Tip: Atom interferometry in free fall
  83. Demonstration Highlight: Smoke Vortex
  84. Demonstration Highlight: Eddy Current Pendulum
  85. STEM News Tip: Measuring the gravitational force of tiny masses
  86. Demonstration Highlight: Plane Mirror
  87. STEM News Tip: The Physics of Music Recital Rooms
  88. Demonstration Highlight: Diameter and Circumference
  89. Demonstration Highlight: The Theremin
  90. STEM News Tip: Physics Today on Physicists & Mental Health in the Pandemic
  91. Demonstration Highlight: Centers of Mass
  92. STEM News Tip: Follow Along With Mars In March!
  93. Demonstration Highlight: Visible and Invisible Spectra
  94. Demonstration Highlight: Brass Barbell
  95. STEM News Tip: NASA's Mars 2020 Has Landed!
  96. Profiles in Physics @ UMD: Dr. Kate O'Neill
  97. Demonstration Highlight: Discharging capacitor
  98. STEM News Tip: This Week on Mars
  99. Demonstration Highlight: Simple Harmonic Motion Video
  100. STEM News Tip: Science Policy 2021
  101. Demonstration Highlight: Flame Tube
  102. UMD Research Commons workshops return for 2021
  103. STEM News Tip: TRAPPIST-1 Planets
  104. Demo Highlight: Funnel Cart
  105. STEM News Tip: Space Launch News
  106. STEM News Tip: Comet C/2021 A1 (Leonard)
  107. Demo Highlight: Hydraulic Press
  108. STEM News Tip: NANOGrav and Low-Frequency Gravitational Waves
  109. Demo Highlight: Polarizers and Light Source
  110. STEM News Tip: AIP Oral History Interviews
  111. Demo Highlight: Newton's Cradle
  112. STEM News Tip: Phosphine and Venus Update: The Research Goes On
  113. A Festive Time: Happy Isaac Newton's Birthday
  114. STEM News Tip: Winter Solstice 2020
  115. Demo Highlight: Rolling vs. Sliding
  116. STEM News Tip: Space, Sun, Stones, and Streaming
  117. Demo Highlight: Suspended Slinky
  118. STEM News Tip: Geminids Meteors
  119. STEM News Tip: Physics Today Features Music & Acoustics for International Year of Sound
  120. STEM News Tip: National Math Festival Online
  121. Demo Highlight: Pendulum Length Ratio
  122. STEM News Tip: Arecibo Observatory to be Decomissioned
  123. Demonstration Highlight: Potential Well
  124. STEM News Tip: UMD Data Challenge 2021
  125. STEM News Tip: Space Launch System Tests Resume
  126. STEM News Tip: The Mathematics of a Pandemic
  127. STEM News Tip: Try NASA’s Eyes on for size!
  128. STEM News Tip: AIP Foundation & TEAM-UP Report
  129. Demo Highlight: Free Fall in Vacuum
  130. STEM News Tip: New Comet in the Neighborhood
  131. Demo Highlight: Van de Graaff and Pie Pans
  132. STEM News Tip: Upcoming Virtual Events with UMD Science
  133. Demo Highlight: The Shive Wave Machine with Prof. Peter Shawhan
  134. The Physics of Bats
  135. Demo Highlight: Electromagnet With Bang
  136. STEM News Tip: Webinar Series
  137. STEM News Tip: Sci-Fi Costumes at Air&Space Museum
  138. STEM News Tip: DOE on STEM Careers
  139. Demonstration Highlight: The Egg Crusher
  140. STEM News Tip: Upcoming SPS Virtual Colloquium with Dr. Nicole Gugliucci
  141. STEM News Tip: Physics Comedy at the Maryland STEM Festival
  142. STEM News Tip: Dean Steve Fetter wins APS Leo Szilard Lectureship Award
  143. Demonstration Highlight: Guitar & Oscilloscope
  144. STEM News Tip: 2020 Nobel Prize in Physics Announced
  145. Demo Highlight: Racing Balls 2
  146. STEM News Tip: Maryland STEM Festival 2020
  147. Demonstration Highlight: Fourier Analysis
  148. STEM News Tip: Learning Resources for Nuclear Power
  149. Today in Physics History: Neptune
  150. Highlight: Van de Graaff Generator Animation
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  152. Animation Highlight: Pendulum Waves
  153. STEM News Tip: Quantum Fireside Chat with Nobel Laureate Bill Phillips
  154. Demo Highlight: Laser and Double Slit
  155. STEM News Tip: Phosphine on Venus
  156. STEM News Tip: COVID-19 and the Physics Job Market
  157. Highlight: Radio Waves and Faraday Cage
  158. Remote Teaching Resources
  159. STEM News Tip: New Gravitational Waves Discoveries!
  160. Atwood's Machine: Testing Newton’s Second Law
  161. STEM News Tip: Some new articles in science teaching & information, August 2020
  162. Demonstration Highlight: Masses Dropped and Shot
  163. STEM News Tip: Native American Physics & Astronomy
  164. STEM News Tip: Titan and its Atmosphere on APOD
  165. STEM News Tip: COVID-19 impact on research
  166. The Tablecloth, the Coin, and Other Adventures with Inertia
  167. Quantum Demonstration and Simulation: The Hydrogen Atom
  168. STEM News Tip: New Atmospheric Phenomena Spotted on Venus
  169. STEM News Tip: SPS Virtual Colloquium
  170. Demonstration Highlight: Simple Harmonic Motion & Uniform Circular Motion
  171. STEM News Tip: Meteor Showers and Rain Showers
  172. STEM News Tip: Sonic Tourism
  173. Demonstration Highlight: Electromagnet
  174. STEM News Tip: Mars 2020 launches this week!
  175. STEM News Tip: Nova Reticuli 2020
  176. How many demonstrations?
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  178. STEM News Tip: Children Learning About Gears
  179. Space News: The Nancy Grace Roman Space Telescope
  180. Demo Highlight: Vector Addition
  181. Demonstration Highlight: The Pencil and Plywood Experiment
  182. Demo Highlight: The Ripple Tank and a Ripple Tank Simulator
  183. Demo Highlight: The Racing Balls in Slow Motion
  184. Happy birthday, Alexander Müller
  185. New Demonstration: The Paramagnetism of a Dysprosium Pendulum
  186. Welcome to Spring 2020
  187. Light Up the Night: Neon and "Neon" Lights
  188. A Heated Discussion In Class
  189. The Physics Soda Can Returns: Electrostatic Induction
  190. Physics Teatime 3: Do Not Try This At Home
  191. Introducing Our Newest Center of Mass Demonstration
  192. FLIGHT!
  193. Happy Birthday Carl Sagan
  194. Hot Air Balloon
  195. Upcoming Events at UMD Physics!
  196. Welcome to Fall 2019!
  197. Summer Hiatus
  198. Phun with Electrons: Particle or Wave?
  199. Physics Teatime 2: On The Making Of Tea
  200. On the Choosing of Demonstrations
  201. Teatime in Physics
  202. Happy Birthday to Émilie du Châtelet
  203. Seeing Sound: Vibrations on a Plate
  204. Women Nobel Laureates in Physics
  205. Coming Soon: Physics is Phun presents Induction and Deduction
  206. New Portable Ripple Tank
  207. Irene Joliot-Curie
  208. New Demos: Buoyancy and Electromagnetic Forces
  209. Falling into Free Fall
  210. Happy 100th Birthday Katherine Johnson!
  211. Demonstration Orders for the Fall Semester
  212. Welcome!