Scientists from NASA and the Indian Space Research Organisation (ISRO) managed to generate an image of a formation located in eastern Antarctica, which has been nicknamed the 'hummingbird'. This discovery was made possible by using data collected by the NISAR satellite, specifically through observations made by the mission's L-band radar in August 2025.
The featured image shows Nunatak Zaterjavshijsja, a mountain peak projecting into a field of ice towards the ocean. The existence of this elevation influences the behavior of the surrounding ice, generating stresses that result in large cracks known as crevasses.
The material was made public by NASA last Tuesday (21) and demonstrates variations in how microwave signals from the radar return after interacting with the frozen surface. This advanced methodology allows scientists to map characteristics of both the terrain and the structures present in the Antarctic ice.
The image was produced by the L-band Synthetic Aperture Radar instrument integrated into the NISAR satellite, a collaboration between the United States and India. This equipment emits radar waves toward Earth and analyzes the return of these waves upon hitting various surfaces.
The distinct variations in the signals help differentiate between areas of more homogeneous ice and those where the structure exhibits irregularities. In the record of Nunatak Zaterjavshijsja, areas with a magenta hue signal more uniform surfaces, while green regions represent volume scattering, characteristic of more complex surfaces, such as the walls of fractures in the ice. The white parts of the image indicate points where both types of returns are intensely similar, which, according to NASA, may suggest a balanced mixture between surface reflections and internal components of the ice.
The visual pattern created by the mountain and adjacent fissures prompted the mission researchers to compare it to the outline of a hummingbird. This formation is situated in the central left part of the record, delimited by green lines that symbolize the deep fissures opened in the ice.
The NISAR project is managed by NASA's Jet Propulsion Laboratory, which is affiliated with the California Institute of Technology (Caltech). The American contribution included the L-band synthetic aperture radar and the antenna reflector, while ISRO was responsible for the satellite platform and the S-band radar. The equipment features a large drum-shaped reflector measuring 12 meters in diameter and is described by NASA as the largest antenna of its kind ever launched by the agency into space. Furthermore, this mission is pioneering in operating with two SAR instruments at different wavelengths.
The space robotics company Lunar Outpost announced on Thursday, the 23rd, that it will incorporate Nvidia-developed Jetson chips into its next vehicle destined for the Moon. This project represents the likely introduction of graphics processing units (GPUs) onto the surface of Earth's natural satellite.
This robotic automobile will be transported in an Intuitive Machines landing module and propelled by a Falcon 9 rocket. It will utilize these electronic components to operate the laser detection system. The artificial intelligence architecture will work alongside conventional programs, allowing for autonomous interpretation of environmental data.
This initiative aligns with NASA's program, which provides funding to private companies to investigate the selenitic soil for strategic resources, such as water. The ultimate goal is to establish sustainable robotic infrastructure and operational conditions before the return of human crews, scheduled to begin in 2028.
The focus on using these semiconductors lies in optimizing power consumption and their compact form factor. Justin Cyrus, CEO of Lunar Outpost, stated that the technical team is conducting comparisons between the Nvidia platform and traditional space flight systems to measure the benefits of graphics processing in critical scenarios.
The mission will take the robot to challenging areas, such as craters and the Reiner Gamma region, known for exhibiting magnetic anomalies. According to the company leader, combining deterministic algorithms with physical AI enables the fleet to make agile decisions in environments subject to cosmic radiation, severe lunar nights, and large temperature variations.
In addition to terrestrial exploration, Nvidia technology will be used on a Firefly Aerospace satellite for image processing in orbit. The startup's leadership explained that the long-term goal includes building a permanent base, the realization of which depends on autonomous robots capable of executing large-scale tasks.
Deployments of smaller vehicles are scheduled for later this year. Justin Cyrus assessed that future plans include the Pegasus rover, designed for astronaut transport, but this awaits the release of the Blue Origin rocket, which recently faced technical issues, maintaining the goal of supporting human missions until 2028.
ChatGPT encountered technical glitches in the afternoon on this Thursday (July 23). When receiving a request, the bot shows longer delays in providing a response.
According to OpenAI's status page, the service functionality is disrupted, but fixing this error is already underway.
Instability is also observed in OpenAI services intended for developers. The status monitor indicates that the company's AI model API components and the Codex code tool have been affected. Similar to the case with ChatGPT, a solution to this problem is actively being implemented.
On Thursday afternoon, the 23rd, ChatGPT began to exhibit various operational problems. The Downdetector website registered a significant increase in complaints regarding the platform, and the official OpenAI status page confirmed the occurrence of system failures.
On Downdetector, the number of complaints reached over 2,700 reports around 3:46 PM Brasília time. The service's official status page reported that 'some users may experience high levels of errors in ChatGPT,' adding that OpenAI has already implemented fixes and is monitoring the system.
A test conducted by Olhar Digital around 3:55 PM showed that, although ChatGPT was slow to process and generate responses, access was successful.
As usual, many individuals from various parts of the globe expressed their dissatisfaction with the situation on the social network X. Some users even associated this Thursday's problem with an alleged hacking of ChatGPT.
