The Experts Club Information and Analysis Center presents a selection of significant discoveries in the field of astronomy and space over the past week. The collection includes significant global sources.
Mysterious object 3I/ATLAS approaches Mars
3I/ATLAS, the third known interstellar object to enter the Solar System, was discovered on July 1, 2025, by the ATLAS telescope in Chile. The orbit of 3I/ATLAS is hyperbolic — the object is not bound by the Sun’s gravity and will not revolve around it, but will only pass through the Solar System. According to calculations, on October 3, 2025, it will pass at a distance of approximately 0.19 astronomical units (≈ 28 million km) from Mars.
In the scientific article “3I/ATLAS (C/2025 N1): Direct Spacecraft Exploration of a Possible Relic of Planetary Formation at ‘Cosmic Noon’,” the authors discuss that at the moment of passing inside the orbit of Mars, the comet may be observable from aboard Martian spacecraft.
In addition, there is a high probability that the JUICE probe (ESA mission to Jupiter’s moons) will also detect 3I/ATLAS in November 2025. Recent estimates of the mass of this object place it higher than previous estimates — it may be more massive than previously thought.
Localization of the brightest FRB (Fast Radio Burst)
An international team of astronomers has been able to pinpoint the source of the brightest FRB signal ever recorded and link it to a specific galaxy.
This achievement helps to better understand the nature of these powerful radio pulses and their possible connection to neutron stars or magnetars.
New theory of Type Ia supernovae
An article in The Astrophysical Journal proposes a mechanism whereby some Type Ia supernovae may be triggered by primary black holes without companions.
This could affect the use of these explosions as “standard candles” in cosmology.
New data from Trace Gas Orbiter about Mars
Analysis of images and spectra from the ExoMars/Trace Gas Orbiter mission has shown that Recurring Slope Lineae on Mars can form without the involvement of liquid water — probably due to dust avalanches. The discovery of oxide and seasonal ozone layers in the Martian atmosphere has also been noted.
Discovery of a potential new satellite of Uranus
The James Webb Space Telescope (JWST) has discovered a potential new satellite of Uranus, provisionally named S/2025 U1, with a diameter of about 10 km, located outside the planet’s ring system.
