Amateur Radio HF & LEO satellites, Hobby Electronics, Space, Astronomy, Technology, Horticulture, Aquaculture. https://xitter.cf/t.co/2NHwlOD8FK.
Kozhikode, Kerala, India
Joined January 2023
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Multimessenger astronomy is an observational approach to studying the universe that combines data from different fundamental "messengers" or signals produced by cosmic events...youtu.be/XaEN-UwN65Q
What does 'era of multimessenger astronomy' mean @grok?
As the sun sets on NASA's Swift mission, we celebrate more than 21 years of discoveries. Designed to catch gamma-ray bursts (GRBs), the universe's most powerful explosions, Swift revolutionized our understanding of these high-energy events and showed how they can illuminate everything from the births of black holes to the history of the early universe.
But Swift's legacy extends far beyond gamma-ray bursts. Its rapid-response capabilities turned it one of astronomy's first responders, alerting observatories around the world to fleeting cosmic events and helping usher in the era of multimessenger astronomy. The mission leaves behind a remarkable scientific legacy and a wealth of data that will continue to enable discoveries for years to come.
Maximum Power Point Tracking solar charge controllers are notorious generators of radio frequency interference across the HF spectrum, particularly appearing as regular spaced carriers, buzzing swishes, or broad "bands" of noise on the 28 MHz band..youtu.be/UvCSoyYXJQ4
Can you guess the cause of this beautiful RFI pattern in my radio? youtu.be/7DsIf7j4sxM
While the Model Y easily accommodates family luggage, groceries, or sports equipment, the Cybercab sacrifices this cargo capacity for a minimalist, scaled-down footprint...youtu.be/kj6VePhP5UU
So this should be a 'Solar Eclipse' on Mars @grok? Nice partial eclipse elegantly demonstrated. Irregular shape of Phobos is also seen well. I presume that smaller bodies have more irregular shape due to lower gravity to pull it into a spherical shape.
太陽を横切るいびつな影 火星探査車が見上げてきた衛星「フォボス」
sorae.info/newslink/sapod-ph…
こちらは火星探査車Perseveranceが2026年8月12日に撮影した、太陽の前を横切る衛星「フォボス」です。火星の地表から撮影されました
Running a water pump without water—a "dry run"—causes rapid, sometimes irreversible damage because the pump relies on the water it moves to act as both a coolant and a lubricant. Without water flowing through the system, several internal failures...youtu.be/GjnFqetMGE4
"Full duration 33-engine static fire for the Super Heavy booster preparing for Flight 15" Last time when the test was done for Fligh 14, @grok told me that the tower keeps the booster down without flying away during static fire. What is the 'full duration'?
When you keep a room fully closed and run the AC continuously, the air quality does degrade over time. This is a common issue because standard residential split ACs do not bring in fresh air...youtu.be/JY9fjASdU_s
NASA’s Deep Space Network is an international system of giant radio antenna facilities that provides vital communication links between Earth and spacecraft exploring the solar system...youtu.be/PNWUf3zhzY8
Quite interesting! "High Speed" operation of a parabolic dish appears quite slow for a person unfamiliar with rotation speed of such antennas. Is it a part of the Deep Space Network @grok?
Yes, I have heard this possibility long back. But you and I need not be worried!
Earth just hit middle age, and the Sun already knows how this ends.
Our planet is around 4.5 billion years old. That puts it roughly halfway through its entire life. Half. The good stretch might already be behind us.
Here’s the finale. In about 5 billion years the Sun runs low on fuel, swells into a red giant and expands so far it swallows the inner planets. Earth included.
No asteroid. No alien invasion. Just the same star that keeps us alive slowly turning into the thing that eats us.
Plenty of time to finish your coffee, though.
Quite an interesting story of how the first photos of Earth from space were captured. Never imagined it this way! Another interesting fact is the person who led the team, a familiar name from my school days!
I had participated in the beta testing of Real-Time QSO Manager (RTQM) when it was initially launched. I did not know that another surprise was waiting for me on the band. Listen to the QSO recording at the end in full to know that! youtu.be/1S0Y--gSqso
Mars Odyssey’s longevity is a testament to rigorous resource conservation and ingenious engineering workarounds. Because the spacecraft lacks a traditional fuel gauge, managing its hydrazine propellant over 25 years...youtu.be/uxslevjpKQw
The battery must always be connected first before connecting the solar panels to an MPPT charge controller. That is what I have done here when I shifted my MPPT charge controller and battery from one location to another...youtu.be/YbstCCyCNXY
Wireless keyboards and mice capture physical inputs and transmit them to a computer using radio waves, bypassing the need for physical cables...youtu.be/l69lIH7BwK4
The Moon’s South Pole has emerged as the premier destination for upcoming crewed bases and international exploration programs (such as NASA’s Artemis program). Unlike the equatorial regions targeted during the historic Apollo missions...youtu.be/AhIkDMvzB4w
What happens to the Mechazilla if the catch is not successful? If the Booster catch is not successful, will it automatically mean that the Ship cannot be caught @grok?
While it waits for the booster, Starbase Pad 2 is keeping busy testing ahead of the potential catch attempt/s on Flight 15, with teams running a full deluge test simulating launch conditions, with a second test around 8 minutes later timed with when the booster will return for a catch.
@NASASpaceflight | nsf.live/starbase