Thursday, May 21, 2026

SpaceX Starship launch: The stakes couldn't be higher

SpaceX Starship launch: The stakes couldn't be higher | How to watch SpaceX launch its 1st Starship V3 today | Lunar Outpost has big plans for the moon
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May 21, 2026
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The Launchpad
 
SpaceX Starship launch: The stakes couldn't be higher
Space.com
It's another big day in spaceflight. It seems like there's a lot of them lately doesn't it?

SpaceX aims to launch its Starship V3 megarocket tonight. There's a lot riding on the debut flight of this new Starship variant — including some of NASA's lunar ambitions. SpaceX is also going public with its IPO next month, so there will be quite a lot of attention on tonight's test flight. Weather continues to be a concern, but we'll be the first to notify you if there's a delay. 

In other news, we've got a look at a fascinating lineup of planets and the moon in the sky tonight, a look at one of Neptune's most enigmatic moons, and a seemingly strange stack of stones on Mars.

We've got all that and more today at Space.com.
 
Big day for SpaceX
 
 
 
 
 
Trending
 
How to watch SpaceX launch its 1st Starship V3 today
 
Watch the launch tonight
 
 
 
 
Spaceflight
 
Lunar Outpost has big plans for the moon
Space.com
Lunar Outpost has unveiled designs for a new Pegasus moon rover for a 2028 launch — but the Colorado-based company isn't stopping there.
 
Lunar infrastructure
 
US military test-launches nuclear-capable ICBM
Space.com
The U.S. military test-launched an unarmed intercontinental ballistic missile from Vandenberg Space Force Base on May 20, 2026. As with every such test launch, the Pentagon stresses that this one was "not in response to world events" and was planned years ago.
 
See the photos
 
 
 
 
Skywatching
 
The moon shines near Jupiter, Venus and Mercury tonight
Space.com
The moon glows with the Beehive Cluster on May 21, as a trio of planets form up in the evening sky. Here's where and when to look.
 
A cosmic beehive
 
A disappointing night changed my astrotourism adventures
Space.com
That night taught me something I've never forgotten: darkness is not a given, and very often astrotourism is planned around the convenience of the host or the venue, not the night sky.
 
Don't be like me
 
 
 
 
Science & Astronomy
 
NASA spacecraft reveals its most complete look at the sky
Space.com
NASA's exoplanet-hunting spacecraft TESS, or Transiting Exoplanet Survey Satellite, has released its most complete view of the sky over Earth — the map reveals the location of 6,000 potential worlds beyond the solar system.
 
6,000 potential planets
 
Where did Neptune's mysterious moon Nereid come from?
Space.com
Neptune's moon Nereid might be the only satellite surviving from the planet's original system, researchers report in a new study. The findings solidify questions about the moon that stem back to its discovery in 1949.
 
A violent history
 
 
 
 
Today in Space
 
Strange stone stack spotted on Mars | Space photo of the day
Space.com
NASA's Perseverance Mars rover has stumbled across an unusual sight: a stack of rocks on the Martian surface. But is it an optical illusion?
 
Read More
 
 
 
 
Entertainment
 
Who is Embo, the villain in 'The Mandalorian & Grogu'?
Space.com
The alien bounty hunter going after Din Djarin and Grogu in the new Star Wars movie might be a mystery to casual fans, but he's not a newcomer.
 
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Editor's Note
 
It's going to be an exciting night tonight as all eyes turn towards SpaceX's Starbase facility in South Texas for the debut launch of Starship V3. Will this be a turning point in NASA's moon plans?

Looking ahead, we'll be bringing you plenty more wonder throughout this Memorial Day weekend including looks at some fascinating Mars rover technology in development, a pairing of the moon and the blue-white star Spica, and our columnist Paul Sutter wonders just what the heck is going on inside "sub-Neptune" planets.

Stay tuned!

Ad astra,
Brett Tingley
Managing Editor, Space.com
 
 
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Seminars Digest, Vol 85, Issue 6

Send Seminars mailing list submissions to seminars@itp.ac.ru To subscribe or unsubscribe via the World Wide Web, visit https://mailman.itp.ac.ru/mailman/listinfo/seminars or, via email, send a message with subject or body 'help' to seminars-request@itp.ac.ru You can reach the person managing the list at seminars-owner@itp.ac.ru When replying, please edit your Subject line so it is more specific than "Re: Contents of Seminars digest..." Today's Topics: 1. Fwd: [ITP Staff] Thursday 21.05.2026 - ITP/CAS Colloquium (Stanislav Apostolov) ---------------------------------------------------------------------- Message: 1 Date: Thu, 21 May 2026 09:59:29 +0300 From: Stanislav Apostolov <sapostolov@itp.ac.ru> To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru Subject: [Landau ITP Seminars] Fwd: [ITP Staff] Thursday 21.05.2026 - ITP/CAS Colloquium Message-ID: <be7a16606cc75e3f0e5033212fb6a141@itp.ac.ru> Content-Type: text/plain; charset="utf-8"; Format="flowed" Zoom: 842 4794 6637 Passcode: 411486 -------- Исходное сообщение -------- ТЕМА: [ITP Staff] Thursday 21.05.2026 - ITP/CAS Colloquium ДАТА: 2026-05-19 10:02 ОТ: info+seminars@itp.ac.ru КОМУ: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru Уважаемые коллеги! На онлайн коллоквиум по теоретической физике в четверг 21.05 будут заслушаны 2 доклада: 1) 10:00:00 по московскому времени: Pan Zhang (Institute of Theoretical Physics, Chinese Academy of Sciences) Decoding of Quantum Error-Correcting Codes: From Exact Spin Glass Solution to Neural Network Decoder, Then to Quantum-Circuit Decoder The talk first shows how optimal maximum-likelihood decoding for certain quantum error-correcting codes (e.g., surface code with independent qubit noise, repetition code under circuit-level noise) maps to exact computation of the partition function of planar spin glasses, yielding a polynomial-time exact decoder. Next, a more general decoding framework based on generative neural networks is presented, followed by a faster variational quantum-circuit counterpart that can run on quantum hardware without syndrome measurements. Biography: Pan Zhang is Professor and Director of the Second Research Division at ITP-CAS. Research: statistical physics, quantum physics, machine learning. Proposed sparse-state tensor network method (resolved Google Sycamore sampling problem); introduced Variational Autoregressive Networks (VAN) and Matrix Product State (MPS) Born machine. Honors: Young Scientist Award of CAS (2023), Second Prize of Beijing Natural Science Award (2022). Since 2023, Divisional Associate Editor (DAE) for Physical Review Letters (physics and machine learning section). 2) 10:00:00 по московскому времени: Yuriy Makhlin (L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences) Topological Josephson Junctions and Quantum Computations Josephson vortices in planar superconducting junctions on top of a topological insulator material may bind electronic states. These subgap states include Majorana modes at zero energy. Their position can be controlled via magnetic field and phase bias, enabling coherent manipulation of quantum states and quantum information processing. Recent experimental data on supercurrent in planar topological Josephson junctions show features possibly linked to low-energy subgap modes. The talk discusses how these modes may explain observed behavior and how interference of local Josephson currents can be used to demonstrate Majorana zero modes and probe their quantum state. Analysis includes disorder effects and other methods to probe bound states, including spectroscopy. Biography: Yuriy Makhlin earned his PhD (1995) and Doctor of Sciences (2004) from the Landau Institute. Research interests: quantum computation, superconducting qubits, quantum circuits, topological materials. Postdoc at UIUC and Karlsruhe; led a research group at University of Karlsruhe (2001-2004) as Sofya Kovalevskaya awardee. Corresponding member of Russian Academy of Sciences; received Fock prize (2018). _______________________________________________ Staff mailing list Staff@itp.ac.ru https://mailman.itp.ac.ru/mailman/listinfo/staff -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.itp.ac.ru/pipermail/seminars/attachments/20260521/c58ad7f0/attachment-0001.htm> ------------------------------ Subject: Digest Footer _______________________________________________ Seminars mailing list Seminars@itp.ac.ru https://mailman.itp.ac.ru/mailman/listinfo/seminars ------------------------------ End of Seminars Digest, Vol 85, Issue 6 ***************************************