2/4 Radar images of asteroid 2024 JV33
Image taken by Goldstone Solar System Radar on August 18, 2024.
Credit: NASA/JPL-Caltech
Image taken by Goldstone Solar System Radar on August 18, 2024.
Credit: NASA/JPL-Caltech
December 16, 2024 at 12:19 AM
Finally got around to making a “Science Nugget” for my recent publication!
#PlanetaryScience #TeamRadar
#PlanetaryScience #TeamRadar
November 19, 2024 at 12:35 AM
Finally got around to making a “Science Nugget” for my recent publication!
#PlanetaryScience #TeamRadar
#PlanetaryScience #TeamRadar
IMHO, still the reigning Halloween space image, an Arecibo radar view of a dead comet that had shed its volatiles after numerous passes around the Sun and passed by Earth on Halloween Day.
November 1, 2025 at 12:31 AM
Vote #TeamRadar
2/4 Radar images of asteroid 2024 JV33
Image taken by Goldstone Solar System Radar on August 18, 2024.
Credit: NASA/JPL-Caltech
Image taken by Goldstone Solar System Radar on August 18, 2024.
Credit: NASA/JPL-Caltech
December 16, 2024 at 12:13 AM
Vote #TeamRadar
#TeamRadar approved.
Friday 13 April 2029 is the day Earth gets lucky, as asteroid Apophis skims (safely) past our planet. 🔭 ESA & JAXA are launching the Ramses mission 🛰️ to rendezvous for a journey only seen every few millennia. It's time to #LookUp. My latest for #JAXA Cosmos 🤸♂️🧪: cosmos.isas.jaxa.jp/look-up-esa-...
December 27, 2025 at 3:00 PM
#TeamRadar approved.
We used the historic Dwingeloo telescope to bounce a signal off the surface of Venus, and receive its echo! This marks only the second time that amateurs have achieved an 'EVE' (Earth-Venus-Earth) bounce. Venus was about 40 million kilometers from Earth.
www.camras.nl/en/blog/2025...
www.camras.nl/en/blog/2025...
April 2, 2025 at 3:32 AM
#TeamRadar is also observing this one: echo.jpl.nasa.gov/asteroids/19...
🪨Asteroid (152637) 1997 NC1, as monitored by ESA's Planetary Defence team, makes a close approach to Earth this Saturday that could be visible to small telescopes 🔭
esa.int/ESA_Multimed...
esa.int/ESA_Multimed...
June 24, 2026 at 5:00 PM
#TeamRadar is also observing this one: echo.jpl.nasa.gov/asteroids/19...
Shout-out to co-authors! @kaleybrauer.bsky.social @michael-w-busch.bsky.social @mikeynolan.bsky.social @sondy.com #TeamRadar 🪨
March 18, 2026 at 10:41 AM
Shout-out to co-authors! @kaleybrauer.bsky.social @michael-w-busch.bsky.social @mikeynolan.bsky.social @sondy.com #TeamRadar 🪨
For comparison: Operating costs for #TeamRadar are about $1 per second of observing time.
In the wake of the ongoing disasters with funding streams, I'm seeing lots of folks suggest that scientists turn to social media crowdfunding to fund their research.
For about a decade I held the record for the social media crowdfunded project that got the most funding. I received about $9,000.
For about a decade I held the record for the social media crowdfunded project that got the most funding. I received about $9,000.
April 15, 2025 at 3:39 PM
For comparison: Operating costs for #TeamRadar are about $1 per second of observing time.
Ontario Lacus is a hydrocarbon lake near the south pole of Saturn’s moon Titan. Measuring 235 kilometers long by 75 kilometers across, Ontario Lacus is slightly smaller than its terrestrial counterpart, Lake Ontario. Lakes on Titan are named after lakes on Earth that are roughly the same size.
August 28, 2026 at 1:34 AM
#TeamRadar
Lazio et al. 2025, "The Next-Generation Ground-Based Planetary Radar" - www.kiss.caltech.edu/final_report...
Lazio et al. 2025, "The Next-Generation Ground-Based Planetary Radar" - www.kiss.caltech.edu/final_report...
www.kiss.caltech.edu
October 10, 2025 at 12:16 AM
#TeamRadar
Lazio et al. 2025, "The Next-Generation Ground-Based Planetary Radar" - www.kiss.caltech.edu/final_report...
Lazio et al. 2025, "The Next-Generation Ground-Based Planetary Radar" - www.kiss.caltech.edu/final_report...
The first test of "Operation Moon Bounce" took place #OTD in 1954. Naval Research Laboratory engineer James Trexler spoke into a microphone, bounced the signal off the moon, and received the return signal a few seconds later. 🔭 🧪 📡
Image: Page from Trexler's notebook, APS History
Image: Page from Trexler's notebook, APS History
July 24, 2025 at 9:31 PM
Non-gravitational acceleration indicative of cometary activity of near-Earth object ☄️
Non-gravitational acceleration indicative of cometary activity of near-Earth object
Nature Astronomy, Published online: 10 July 2026; doi:10.1038/s41550-026-02913-7Subtle orbital shifts prompted deep imaging of near-Earth object 1998 SH2, which uncovered a weak tail and confirmed cometary activity. The result indicates that more near-Earth objects currently classified as asteroids may also exhibit hidden low-level activity.
dlvr.it
July 11, 2026 at 1:36 AM
Starting Day 4 in the Asteroids, Comets and Moons session. First up is Lance Benner on the Status of Near-Earth Asteroid Radar Observations at the Goldstone Solar System Radar.
Abstract 1803: www.hou.usra.edu/meetings/lps...
#LPSC2025
Abstract 1803: www.hou.usra.edu/meetings/lps...
#LPSC2025
March 13, 2025 at 3:14 PM
October 31, 2023 at 4:07 PM
Check out our tiny rock featured by @eso.org !
Now available in Nature Comms: www.nature.com/articles/s41...
We measured the size using the new lightcurve shape models and old radar data #TeamRadar
📡🪨🔭🧪
Now available in Nature Comms: www.nature.com/articles/s41...
We measured the size using the new lightcurve shape models and old radar data #TeamRadar
📡🪨🔭🧪
September 18, 2025 at 10:19 AM
Check out our tiny rock featured by @eso.org !
Now available in Nature Comms: www.nature.com/articles/s41...
We measured the size using the new lightcurve shape models and old radar data #TeamRadar
📡🪨🔭🧪
Now available in Nature Comms: www.nature.com/articles/s41...
We measured the size using the new lightcurve shape models and old radar data #TeamRadar
📡🪨🔭🧪
Paper day! 🔭☄️🧪
Come meet this space-faring ⛄️or 🥜-shaped pile of rocks. A distant cousin of Selam, contact-binary asteroids like this one are often seen in radar #TeamRadar
(Also, the first first-author paper for Richard, who happens to be the first PhD student I am fully officially supervising)
Come meet this space-faring ⛄️or 🥜-shaped pile of rocks. A distant cousin of Selam, contact-binary asteroids like this one are often seen in radar #TeamRadar
(Also, the first first-author paper for Richard, who happens to be the first PhD student I am fully officially supervising)
Today on the #arXiv:
Cannon et al. 2025, "Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations" - arxiv.org/abs/2503.01499
Richard Cannon did good work on this latest from #TeamRadar.
Cannon et al. 2025, "Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations" - arxiv.org/abs/2503.01499
Richard Cannon did good work on this latest from #TeamRadar.
Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations
Contact binaries are found throughout the solar system. The recent discovery of Selam, the satellite of MBA (152830) Dinkinesh, by the NASA LUCY mission has made it clear that the term `contact binary...
arxiv.org
March 4, 2025 at 12:48 PM
Paper day! 🔭☄️🧪
Come meet this space-faring ⛄️or 🥜-shaped pile of rocks. A distant cousin of Selam, contact-binary asteroids like this one are often seen in radar #TeamRadar
(Also, the first first-author paper for Richard, who happens to be the first PhD student I am fully officially supervising)
Come meet this space-faring ⛄️or 🥜-shaped pile of rocks. A distant cousin of Selam, contact-binary asteroids like this one are often seen in radar #TeamRadar
(Also, the first first-author paper for Richard, who happens to be the first PhD student I am fully officially supervising)
Since I was asked:
Interstellar object 3I / #A11pl3Z will not be passing close enough to Earth to be observed by #TeamRadar.
Alas for the loss of Arecibo (although depending on the exact size of 3I, even Arecibo might not have been enough).
Interstellar object 3I / #A11pl3Z will not be passing close enough to Earth to be observed by #TeamRadar.
Alas for the loss of Arecibo (although depending on the exact size of 3I, even Arecibo might not have been enough).
July 2, 2025 at 4:51 PM
Since I was asked:
Interstellar object 3I / #A11pl3Z will not be passing close enough to Earth to be observed by #TeamRadar.
Alas for the loss of Arecibo (although depending on the exact size of 3I, even Arecibo might not have been enough).
Interstellar object 3I / #A11pl3Z will not be passing close enough to Earth to be observed by #TeamRadar.
Alas for the loss of Arecibo (although depending on the exact size of 3I, even Arecibo might not have been enough).
#TeamRadar at the National Radio Astronomy Observatory is hiring someone to do the on-site work at the Green Bank Telescope: jobs.dayforcehcm.com/en-US/aui/CA... .
This requires living in Green Bank, West Virginia, or lots of travel through the mountains.
This requires living in Green Bank, West Virginia, or lots of travel through the mountains.
Job Details | Dayforce Jobs
Find your next adventure
jobs.dayforcehcm.com
May 3, 2026 at 8:32 PM
#TeamRadar at the National Radio Astronomy Observatory is hiring someone to do the on-site work at the Green Bank Telescope: jobs.dayforcehcm.com/en-US/aui/CA... .
This requires living in Green Bank, West Virginia, or lots of travel through the mountains.
This requires living in Green Bank, West Virginia, or lots of travel through the mountains.
Today on the #arXiv:
Nolan et al. 2026, "Planetary Radar at the Arecibo Observatory" - arxiv.org/abs/2604.00332
@mikeynolan.bsky.social, @lynncarter.bsky.social, and @planettreky.bsky.social review everything that was done by #TeamRadar at Arecibo.
Nolan et al. 2026, "Planetary Radar at the Arecibo Observatory" - arxiv.org/abs/2604.00332
@mikeynolan.bsky.social, @lynncarter.bsky.social, and @planettreky.bsky.social review everything that was done by #TeamRadar at Arecibo.
Planetary Radar at the Arecibo Observatory
In the late 1990s, the Arecibo Observatory and its planetary radar system were upgraded to increase sensitivity by a factor of 20. This upgrade substantially improved the quality of the data and the a...
arxiv.org
April 2, 2026 at 3:15 AM
Today on the #arXiv:
Nolan et al. 2026, "Planetary Radar at the Arecibo Observatory" - arxiv.org/abs/2604.00332
@mikeynolan.bsky.social, @lynncarter.bsky.social, and @planettreky.bsky.social review everything that was done by #TeamRadar at Arecibo.
Nolan et al. 2026, "Planetary Radar at the Arecibo Observatory" - arxiv.org/abs/2604.00332
@mikeynolan.bsky.social, @lynncarter.bsky.social, and @planettreky.bsky.social review everything that was done by #TeamRadar at Arecibo.
#WithoutNSF we would not have had the Arecibo Observatory until 2020; and we would not have the Green Bank Telescope, the Very Large Array, or the Very Long Baseline Array - all of which #TeamRadar has used to make sure that asteroids are not going to fall from the sky.
May 4, 2025 at 6:06 AM
#WithoutNSF we would not have had the Arecibo Observatory until 2020; and we would not have the Green Bank Telescope, the Very Large Array, or the Very Long Baseline Array - all of which #TeamRadar has used to make sure that asteroids are not going to fall from the sky.
Hey #TeamRadar! EPSC/DPS abstract submission is open and there's this cool session "On the radar: From small bodies, to moons and planets with ground- and space-based radars"
meetingorganizer.copernicus.org/EPSC-DPS2025...
🔭☄️📡 #planetaryscience
meetingorganizer.copernicus.org/EPSC-DPS2025...
🔭☄️📡 #planetaryscience
Session MITM7
meetingorganizer.copernicus.org
March 28, 2025 at 6:56 PM
Hey #TeamRadar! EPSC/DPS abstract submission is open and there's this cool session "On the radar: From small bodies, to moons and planets with ground- and space-based radars"
meetingorganizer.copernicus.org/EPSC-DPS2025...
🔭☄️📡 #planetaryscience
meetingorganizer.copernicus.org/EPSC-DPS2025...
🔭☄️📡 #planetaryscience
It has also been nearly 20 years now since I got to help observe #Apophis with the Arecibo Observatory as a #TeamRadar summer student.
Woah.
Woah.
April 7, 2025 at 5:32 PM
It has also been nearly 20 years now since I got to help observe #Apophis with the Arecibo Observatory as a #TeamRadar summer student.
Woah.
Woah.
And, in case anyone is confused:
Speckle imaging as done here is entirely different from speckle tracking as done by #TeamRadar.
Speckle imaging as done here is entirely different from speckle tracking as done by #TeamRadar.
July 21, 2025 at 7:15 PM
And, in case anyone is confused:
Speckle imaging as done here is entirely different from speckle tracking as done by #TeamRadar.
Speckle imaging as done here is entirely different from speckle tracking as done by #TeamRadar.
I class radio and radar astronomy together.
#TeamRadar just does not rely upon the universe for our photons (to quote @sondy.com).
#TeamRadar just does not rely upon the universe for our photons (to quote @sondy.com).
August 27, 2025 at 9:30 PM
I class radio and radar astronomy together.
#TeamRadar just does not rely upon the universe for our photons (to quote @sondy.com).
#TeamRadar just does not rely upon the universe for our photons (to quote @sondy.com).