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SpaceX marked its 60th Falcon 9 flight of 2025 by successfully launching a brand-new Falcon 9 booster rocket on the 20th of May. This rocket carries 23 Starlink V2 Mini satellites into low Earth orbit. Among those, 13 feature Direct to Cell capabilities. Originally, it was targeting 11:58 p.m. EDT on May 19 (0358 UTC on May 20) for the launch, but that try was aborted just before liftoff, for reasons that the company did not immediately explain. It was finally launched on Tuesday (May 20) at 11:19 p.m. EDT (0319 GMT on May 21) from the Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida.

About the launch

According to SpaceX’s mission overview, this was the first-ever launch for this particular Falcon 9’s (booster B1095) first stage. While most recent SpaceX missions have reused Falcon 9 boosters , a signature part of the company’s cost-saving and sustainability strategy ,Tuesday’s flight featured a rare first-stage debut.

The rocket successfully completed its initial mission, separating from the upper stage around two and a half minutes after liftoff. About eight minutes later, the booster made a precise landing on the SpaceX drone ship “Just Read the Instructions,” stationed in the Atlantic Ocean. This smooth recovery sets the stage for future reusability of the rocket.

Technical Advancement

Of the 23 satellites onboard, 13 were outfitted with direct-to-cell technology — a feature designed to enable satellite connectivity directly to mobile phones, especially in areas lacking terrestrial infrastructure. After reaching space, the rocket’s second stage performed a short engine burn to circularize the orbit before deploying the satellites about 65 minutes after launch.

Starlink is the largest satellite megaconstellation ever constructed, consisting of about 7,500 operational satellites at the moment. And that number is growing all the time, as Tuesday’s action shows.

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New World Record Alert: Weather Satellite Records Longest Lightning Flash of 515 Miles

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August 1, 2025

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New World Record Alert: Weather Satellite Records Longest Lightning Flash of 515 Miles

Back in the year 2017, when a thunderstorm exhibited a lightning bolt, it was astonishing in many ways. Not only was it surprising, but it was a bolt that went 515 miles (829 Kilometers) long. In recent scientific advancements, researchers have confirmed the length of the bolt using archival satellite data. The lightning stretched and travelled from Texas to Missouri. This lightning has finally made a world record by beating the previous record holder, which was a bolt that went 477 miles in the year 2020.

According to Randy Cerveny, an Arizona State University professor, who played a significant role in the study, stated, “We call it megaflash lightning and we’re just figuring out the mechanics of how and why it occurs”.

More About Megaflash Lightning

Megaflash lightning could be best described as a lightning bolt that possesses the capacity to reach 62 miles in length. Whereas, the average lightning bolt is less than 10 miles in length. In order to find the reason behind this megaflash, the team assessed the data from the National Oceanic and Atmospheric Administration’s GOES-16 satellite. This satellite is embedded with a lightning mapper that monitors over one million bolts on a daily basis. This analysis determined that the length of the bolt was 515 miles.

Know How a Megaflash is Measured

With the advancements in satellites, the lightning mappers have become an accurate source of measuring lightning. Previously, ground-based radio networks did the work. As mentioned on Space.com, according to Michael Peterson, Georgia Tech Research Institute, “Adding continuous measurements from geostationary orbit was a major advance”. We are now at a point where most of the global megalfash hotspots are covered by a geostationary satellite, and data processing techniques have improved to properly represent flashes in the vast quantity of observational data at all scales”.

Typically, these megaflashes are rare and are generated from less than one percent of the thunderstorms. These megaflashes are mainly a result of a 14-hour churn or more.

To conclude, as mentioned on Space.com, Cerveny stated, “Those conditions aren’t much rare though. And, as our lightning mapping satellites curate new data, the potential megaflashes are expected to be visible. Likewise, there is a possibility that megaflashes, even larger in length, exist. Over time, they will also be observed.

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New Rogue Planet Discovered in Hubble Data Using Einstein’s Gravity Theory

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August 1, 2025

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New Rogue Planet Discovered in Hubble Data Using Einstein’s Gravity Theory

Astronomers found that a new rogue planet hides in the archival data that was gathered by the Hubble Space Telescope with the help of Albert Einstein and the happening of the events by chance, leading to success. These planets are also known as free-floating planets and do not orbit a star. These are just ejected from their home systems because of the planetary interactions. As they lack a host star, it is difficult to detect them by transit. However, the astronomers use microlensing with gravity, Einstein’s 1915 theory-based phenomenon of general relativity, in which massive objects warp space and bend light from the background stars.

Einstein’s Theory Helps Detect Hidden Rogue Planet

According to As per Przemek Mroz, a professor at the University of Warsaw free free-floating planets don’t orbit any star and drift alone through the galaxy. In order to find such objects, we need to use the technique of gravitational microlensing. At the time of using this technique, the light of the background star gets magnified temporarily. The physicists estimate the mass of the object by analysing the properties of the event.

The newly found event of microlensing, OGLE-2023-BLG-0524, was seen by Hubble on May 22, 2023. Observed by KMTnet, the event only lasted for eight hours and was discovered in the Galactic bulge by the OGLE survey. The team ruled out the presence of a host star; however, very nearby elements can’t be excluded completely.

Microlensing Event Reveals Free-Floating Planet in Hubble Data

The lens and source are more relative to each other; the physicists confirm the status of the object over time. The movement of 5 milliseconds per year could take 10 years to resolve with the recent instruments.

Hubble’s data from 1997 let the scientists rule out the bright host stars. Mroz said that if the lens were a bright star, we would have observed it, but we could not. This absence evoked 25%-48% of the possible stellar companions. This research is available on arXiv.

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Brightest Gamma-Ray Burst Ever Observed Reveals Cosmic Secrets

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August 1, 2025

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Brightest Gamma-Ray Burst Ever Observed Reveals Cosmic Secrets

On Oct. 9, 2022, astronomers recorded an extraordinary flash of high-energy light. This gamma-ray burst (GRB 221009A), nicknamed the “BOAT” (Brightest Of All Time), was the brightest and most energetic cosmic explosion ever witnessed. It came from a galaxy about 2 billion light-years away, and its blast of gamma rays briefly overwhelmed detectors on orbiting satellites. Scientists say such a powerful GRB is extremely rare – roughly a once-in-10,000-year event – and its record-setting nature offers a rare chance to study the death of a star and the physics of these extreme blasts.

Decoding the ‘BOAT’

According to the paper, GRB 221009A was first detected by NASA’s Fermi and Swift spacecraft. Its initial, powerful gamma-ray flash blinded detectors around the world. Its extreme nature marked it out immediately from other GRBs. Though astronomers originally detected the BOAT as an immensely bright flash of high-energy gamma rays, this flash was followed by a fading afterglow across many wavelengths of light, thus allowing non-gamma-ray-based telescopes to study it.

One of the biggest challenges was that the related supernova, SN 2022xiw, was hidden by the brilliance of the GRB and only visible much later. This behaviour highlights how the burst’s huge energy can disguise temporarily the underlying death of the star, making total observation challenging.

Insights on GRBs

Gamma-ray bursts such as this result from the collapse of a star’s core into a black hole. The newly born black hole powers twin beams of particles at nearly the speed of light, breaking through the star and creating the seen gamma rays. GRB 221009A data fit this model but surprise us. Astronomers employed the James Webb Space Telescope to locate the supernova burst but could not detect a hint of heavy elements such as gold or platinum in the debris. Meanwhile, NASA’s Fermi satellite observed an odd gamma-ray line, which is potentially the first unmistakable detection of electrons colliding with positrons (their antimatter counterparts) and annihilating in a GRB jet. These clues are helping researchers refine models of GRBs, stellar collapse, and how heavy elements are forged.

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Further reading:
Gamma-Ray Burst, GRB 221009A, BOAT, Supernova, JWST, Fermi, Stellar Death, Cosmic Explosion, Astrophysics, Space Discovery, NASA

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