Tag: 3I/ATLAS

  • James Webb Telescope Discovers Possible 12 Billion-Year-Old Comet

    James Webb Telescope Discovers Possible 12 Billion-Year-Old Comet

    Key Takeaways

    1. Comet 3I/ATLAS was initially thought to be an alien spaceship, but new data shows it has normal cosmic origins.
    2. It is estimated to be 10 to 12 billion years old, making it older than both Earth and the solar system.
    3. The comet likely originated in a cold region of the Milky Way galaxy, close in age to the galaxy itself.
    4. The James Webb Space Telescope (JWST) provided new insights into the comet’s gas composition, confirming its ancient origins.
    5. 3I/ATLAS measures about 1,400 ft (440 m) in size and entered the solar system at a speed of approximately 137,000 mph (221,000 km/h).

    The comet 3I/ATLAS was found last year, moving through the solar system, with some folks suggesting it was a spaceship from aliens. Recent observations by the JWST, however, have provided evidence that this space object has more normal origins.

    Age and Origins of 3I/ATLAS

    The results indicate that 3I/ATLAS originated in a chilly, distant region of the Milky Way galaxy. With estimates ranging from 10 to 12 billion years old, this comet’s age is more than twice that of both Earth and the solar system. Furthermore, 3I/ATLAS is quite close in age to the Milky Way, which is around 13.6 billion years old, and to the universe itself, at approximately 13.8 billion years.

    New Data from JWST

    The advanced JWST collected new data while it was passing by the comet in late 2025. It analyzed the gas composition that formed on the comet as the sun warmed it up, leading to the sublimation of the ice on its surface.

    Earlier assessments had estimated the age of 3I/ATLAS to be between 3 billion and 11 billion years. However, research scientist Romain Maggiolo stated, “They show that 3I/ATLAS isotopic composition is very different from solar system comets and suggest that it likely formed 10-12 billion years ago.”

    Size and Speed Details

    The comet is thought to measure 1,400 ft (440 m) and stretch about 3.5 miles (5.6 km) wide. Observations from the Hubble Space Telescope indicate it entered the solar system at a speed of around 137,000 mph (221,000 km/h). The nearest point of approach to Earth was at a distance of 168 million miles (270 million km), which was recorded on December 19, 2025.

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  • Martian Probes Capture Unseen Cosmic Event

    Martian Probes Capture Unseen Cosmic Event

    Key Takeaways

    1. Mars is currently observing the interstellar comet 3I/ATLAS, which travels at over 60 kilometers per second.
    2. The Mars Express and ExoMars Trace Gas Orbiter are monitoring the comet, despite it being 29 million kilometers away from Mars.
    3. The brightness of the comet is 10,000 times dimmer than typical objects the spacecraft observe, posing significant challenges.
    4. The CaSSIS imaging system successfully captured a clear image of the comet, revealing its coma made largely of ice.
    5. The upcoming Juice mission will begin observing the comet as it nears the sun, potentially providing valuable insights.

    Located millions of kilometers away from Earth, Mars is now witnessing a rare event. The interstellar visitor known as 3I/ATLAS, a comet, is racing through our solar system at speeds exceeding 60 kilometers per second. However, due to limitations in observation from Earth, astronomers with the European Space Agency have dedicated the Mars Express and ExoMars Trace Gas Orbiter spacecraft to closely monitor this celestial traveler.

    A Historic Challenge

    This endeavor presents a unique challenge and marks a first in history, as the cameras on these two spacecraft are designed to capture images of objects that are less than 1,000 kilometers away. In contrast, this comet is situated a staggering 29 million kilometers from Mars, making the task particularly tough, if not close to impossible.

    Surprising Results

    To add to the difficulties, this comet shines with a brightness that is 10,000 times dimmer than what these probes typically observe. Nevertheless, thanks to the CaSSIS imaging system on the ExoMars TGO, astronomers managed to capture a surprisingly clear image of the comet.

    The details are stunning, revealing the comet’s coma, which is essentially the cloud of gas surrounding its nucleus, made largely of ice. Future research is expected to shed more light on this enigmatic object, which has even been speculated to be an alien probe.

    Upcoming Observations

    In just a few weeks, the Juice mission will begin its observations of this comet as it approaches its closest point to the sun. There is little doubt that these forthcoming observations will yield important insights into the nature of this object and its trajectory.

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  • Hubble’s Sharpest Image of Fastest Interstellar Comet Ever

    Hubble’s Sharpest Image of Fastest Interstellar Comet Ever

    Key Takeaways

    1. 3I/ATLAS was first spotted on July 1, 2025, using the NASA-funded ATLAS system and the Gemini North Telescope, located 420 million miles from the Sun.

    2. Hubble Space Telescope observations suggest the comet’s nucleus could range from 1,000 feet to 3.5 miles in diameter, with visible dust plumes indicating activity.

    3. The dust loss rate observed aligns with typical patterns for comets discovered around 300 million miles from the Sun, as they heat up and release gas and dust.

    4. 3I/ATLAS travels at an extraordinary speed of 130,000 miles per hour, indicating it has been in space for billions of years, influenced by gravitational forces from nearby stars and nebulae.

    5. NASA plans further missions to study 3I/ATLAS, including its chemical composition, while some theorize it could be an alien probe, as suggested by Harvard University professor Avi Loeb.

    3I/ATLAS was initially spotted on July 1, 2025, thanks to the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS), which was created by the University of Hawai’i. The comet was first seen 420 million miles away from the Sun with the help of the Gemini North Telescope. However, a follow-up observation by the NASA/ESA Hubble Space Telescope on July 21 has enabled scientists to better estimate the size of the comet’s nucleus.

    Size Estimations

    Data from Hubble indicates the nucleus could be as large as 3.5 miles (5.63 km) in diameter, though it might also be as tiny as 1,000 feet (304.8 m) wide. The images captured by Hubble show a dust plume coming from the side of the comet facing the Sun. Additionally, the pictures suggest that a dust tail is trailing away from the comet’s nucleus.

    Dust Loss Rate Insights

    The rate of dust loss revealed by Hubble’s observations isn’t unusual for 3I/ATLAS. It aligns with what is typically seen in comets first discovered around 300 million miles from the Sun. These comets, made of ice and dust, begin to heat up as they approach the Sun. The frozen materials transform into gas, leading to the dust being ejected away from the comet.

    Record-Breaking Speed

    Unlike other comets that have been observed, 3I/ATLAS is zooming through space at a staggering speed of 130,000 miles per hour (209,215 km/h). This rapid pace hints that the comet has been navigating through interstellar space for billions of years. It is thought that gravitational forces from stars and nebulae have gradually increased its speed over time.

    Despite the current information, one thing remains unseen—the nucleus itself. NASA has planned additional missions to gather more information about the comet, including what it’s made of chemically. In the meantime, Harvard University professor Avi Loeb has proposed a theory that it could be an alien probe.

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  • Harvard Physicist Claims Object in Solar System is Alien Probe

    Harvard Physicist Claims Object in Solar System is Alien Probe

    Key Takeaways

    1. The interstellar object 3I/ATLAS was discovered on July 1 by the ATLAS telescope in Chile and lacks comet-like features or gases.
    2. 3I/ATLAS has a retrograde orbit around the Sun and is estimated to be over 20 km wide.
    3. Harvard physicist Avi Loeb suggests that the object may be extraterrestrial, pointing to its unusual trajectory and low probability of entering the inner solar system by chance.
    4. The object’s closest approach to the Sun is expected on October 29, which Loeb believes could be a strategy to evade detection.
    5. Not all scientists agree with Loeb’s hypothesis; some, like Richard Moissl from the European Space Agency, argue that 3I/ATLAS fits the characteristics of a natural body.

    Since early July, a fresh interstellar object has shown up in our solar system. While most scientists think it comes from far away, a physicist from Harvard has a completely different idea.

    Discovery and Characteristics

    On July 1, the ATLAS telescope in Chile found 3I/ATLAS, an interstellar object that challenges what we know about science. It lacks any known comet-like features, and no gases have been found since the start of spectroscopic analyses.

    Intriguing Trajectory

    The path of this object is also fascinating to researchers. It moves in a retrograde orbit around the Sun. Moreover, its size is impressive, with estimates suggesting it is over 20 km wide.

    An Unusual Hypothesis

    Considering these oddities, Avi Loeb, a professor of theoretical physics at Harvard, confidently presents a surprising hypothesis. He argues that 3I/ATLAS has traits that could lead one to think it’s an extraterrestrial object instead of something natural.

    To back up his claim, he points to the star’s trajectory. If it approaches Venus, Mars, and Jupiter next autumn, which seems likely, this could indicate a purposeful entry into our inner solar system, with a mere 0.005% probability of happening by chance. Another point he makes is that this interstellar object will be closest to the Sun on October 29, which Loeb believes might align with a strategy to hide it from our instruments.

    Diverging Opinions

    Despite the buzz surrounding these claims, not all experts share this view. Richard Moissl, who leads planetary defense at the European Space Agency, argues that the object’s traits fit what we would expect from a natural body.

    This discussion brings to mind the debates surrounding 1I/ʻOumuamua in 2017 when that remarkable object was discovered. It’s interesting to note that Loeb also made comments on this matter, which sometimes caused controversy.

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  • Naked Eye Interstellar Visitor Could Soon Appear in Night Sky

    Naked Eye Interstellar Visitor Could Soon Appear in Night Sky

    Key Takeaways

    – 3I/ATLAS is an ancient celestial object, approximately three billion years old, traveling at 210,000 kilometers per hour.
    – Researchers at Oxford University are using updated computer models and data from the Gaia space observatory to study its origin in the Milky Way.
    – The object contains a significant amount of water ice, which may create a visible tail when it approaches the Sun.
    – Its exact path is not fully known, but it is expected to come near Mars, requiring further observations to determine its trajectory.
    – Studying 3I/ATLAS could provide valuable insights into the universe and events beyond our solar system.

    A few days back, an object from beyond the stars was detected within our solar system. Astronomers are keeping a close eye on it, as they think it might soon be visible to everyone without a telescope when it gets near the Sun.

    Its Age and Speed

    This celestial body, called 3I/ATLAS, might be one of the oldest things humans have ever seen. It’s estimated to be about three billion years old, zooming through space at an impressive speed of 210,000 kilometers per hour. Scientists suggest that it comes from a different part of the Milky Way than the area where we are currently located.

    Research Findings

    In more detail, researchers at Oxford University have created and updated a computer model to study this object. They use data from the Gaia space observatory, which helps pinpoint its origin in the “thick disk” of our galaxy, an area known for being the birthplace of many ancient stars.

    Composition and Visibility

    What truly fascinates researchers is the makeup of this interstellar visitor. It contains a lot of water ice, which may cause it to develop a tail when it gets close to the Sun, as the heat turns the ice into vapor. This sight would undoubtedly be amazing and visible to the naked eye.

    Even though this sounds like something from a sci-fi movie, similar to the comet C/2020 F3 Neowise, we need to proceed with caution. The exact path of 3I/ATLAS isn’t precisely known yet, but we do know it will come near Mars. More observations are essential to figure out its route through our solar system and whether it will create a stunning display over several days.

    Importance of 3I/ATLAS

    Besides this, the study of 3I/ATLAS will help scientists gain a clearer understanding of the universe and the events happening beyond our solar system. There’s no doubt that ongoing research will reveal new insights, even if certain unanswered questions linger.

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