Explore

Harvard Scientists Detect First Direct Radio Signals from Exoplanet Beta Pictoris b

Harvard Scientists Detect First Direct Radio Signals from Exoplanet Beta Pictoris b

Astronomers, led by a Harvard team including Edo Berger and Kevin Ortiz Ceballos, have achieved a historic milestone by directly detecting radio emissions from an exoplanet outside our solar system for the first time. The signals originate from Beta Pictoris b, a young gas giant approximately 63 light-years from Earth, with an estimated mass 12 times that of Jupiter. The detection, made using the MeerKAT radio telescope array in South Africa, provides direct observational proof of an immense planetary magnetic field. These repeating, strongly circularly polarized radio bursts were detected across frequency bands between 0.85 GHz and 3.5 GHz. The magnetic field intensity of Beta Pictoris b is measured at least 1.25 kilogauss, over 200 times stronger than Jupiter's. The radio signals are generated by massive auroral storms, similar to Earth's Northern and Southern Lights, where high-energy charged particles trapped within the planet's magnetic field lines accelerate and produce intense bursts of coherent rad...

NASA Advances LISA Mission Contributions with New Gravitational Wave Telescope Test Unit

NASA Advances LISA Mission Contributions with New Gravitational Wave Telescope Test Unit

NASA has taken a significant step forward in its contributions to the Laser Interferometer Space Antenna (LISA) mission by developing a new all-glass Engineering Test Unit telescope. This telescope is a crucial component for the space observatory, which is designed to detect gravitational waves, ripples in space-time predicted by Albert Einstein. The LISA mission, led by the European Space Agency (ESA) and slated for launch in the mid-2030s, will deploy three satellites in an Earth-following orbit, forming a triangular array with sides stretching 1.6 million miles. Each satellite will house two telescopes that transmit and receive infrared laser beams to precisely measure minuscule changes in their relative distances, indicating the presence of gravitational waves. L3Harris Technologies is responsible for designing, assembling, and integrating this new telescope for NASA, marking a final developmental step before the production of flight hardware. The telescope is constructed entirely from Zerodur, an ambe...

UNH Scholar Rachel Trubowitz Discusses Infinity's Impact on Science and Society at Harvard Talk

UNH Scholar Rachel Trubowitz Discusses Infinity's Impact on Science and Society at Harvard Talk

Rachel Trubowitz, an English professor at the University of New Hampshire, delivered a talk at Harvard's Barker Center, focusing on the 'paradigm-shifting' acceptance of infinity and its influence on modern science, mathematics, and societal thought. Her lecture, based on her new book 'Milton in Mathematics,' explored how the concept of infinity, initially feared in Ancient Greek philosophy, became legitimate and instrumental in the development of calculus and physics, with contributions from figures like Isaac Newton and Gottfried Wilhelm Leibniz. Trubowitz argued that this shift in understanding infinity also impacted political thought, particularly concerning hierarchical social structures, as perceptions of God changed. She emphasized the historical connection between scientific and humanities scholars, advocating for more interdisciplinary research.

International Team Detects Most Distant Very High-Energy Blazar Using La Palma Telescopes

International Team Detects Most Distant Very High-Energy Blazar Using La Palma Telescopes

An international team of scientists has successfully detected very high-energy gamma rays originating from a blazar approximately eight billion light-years away. This blazar, identified as OP 313, represents the most distant source of its kind ever recorded. The observations were conducted using the Large-Sized Telescope prototype LST-1 of the Cherenkov Telescope Array Observatory and the Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes, both situated at the Roque de los Muchachos Observatory on La Palma, Spain. Blazars are known as exceptionally bright active galactic nuclei, powered by supermassive black holes at their centers. OP 313 is specifically categorized as a flat-spectrum radio quasar, which are among the most luminous and powerful sources of radiation known in the universe. The detection of these gamma rays from such a vast distance is particularly challenging due to their interaction with the extragalactic background light, which causes their energy to convert into electron-pos...

Astronomers Trace Record-Breaking Fast Radio Burst to Distant Galaxy, Unveiling Early Universe Insights

Astronomers Trace Record-Breaking Fast Radio Burst to Distant Galaxy, Unveiling Early Universe Insights

Astronomers have successfully traced a mysterious fast radio burst (FRB), designated FRB 20240304B, that traveled over 10 billion years to reach Earth, setting a new distance record for such phenomena. This discovery, published in Science, has led to the identification of an unexpected galaxy in the early universe and offers a novel method for investigating matter hidden between galaxies. FRBs are intense, millisecond-long flashes of radio waves with unknown origins, making their study challenging as most disappear before their sources can be pinpointed. FRB 20240304B originated when the universe was approximately 3 billion years old, significantly extending the observational reach into an era of substantial galactic growth and transformation. The breakthrough was led by Dr. Manisha Caleb and Dr. Themiya Nanayakkara at the University of Sydney, utilizing the MeerTRAP project with the MeerKAT radio telescope for detection and the James Webb Space Telescope (JWST) for host galaxy identification.

Trump admin to investigate 3 CA universities for alleged visa fraud

Trump admin to investigate 3 CA universities for alleged visa fraud

The Trump administration is investigating nine universities, including three California-based institutions, for allegedly committing J-1 visa fraud.

NASA's James Webb Space Telescope Measures Distance to Farthest Fast Radio Burst, Suggesting Origin

NASA's James Webb Space Telescope Measures Distance to Farthest Fast Radio Burst, Suggesting Origin

Astronomers utilizing NASA’s James Webb Space Telescope have successfully pinpointed the host galaxy of the most distant fast radio burst (FRB) observed to date, designated FRB 20240304B. First detected by the MeerKAT telescope, the radio data indicated its extreme distance. The Webb telescope's NIRCam instrument located the host galaxy, and its NIRSpec instrument provided a precise redshift measurement of 2.148, placing the event approximately 3 billion years after the Big Bang. This host galaxy is a small, actively star-forming dwarf galaxy, which is significantly less massive (1,000 times) than typical FRB host galaxies. This finding challenges existing theories regarding the origin of FRBs, particularly those suggesting they result from the merger of two neutron stars, a process expected to take billions of years and thus be associated with older, more evolved stellar populations. The team's work, published in the journal Science, suggests that the FRB is unlikely to have been produced by such a merger...

Astronomers Identify Candidate for 'Second-Generation' Planet Formed from Dead Star's Material

Astronomers Identify Candidate for 'Second-Generation' Planet Formed from Dead Star's Material

Astronomers have identified a candidate for a 'second-generation' planet orbiting the white dwarf star HS 0209+0832, located approximately 270 light-years from Earth. This potential planet is believed to have formed from material ejected by the star as it died, a process that would represent a cosmic rebirth. Observations from NASA’s Hubble Space Telescope revealed unusually high amounts of heavy elements in the white dwarf’s atmosphere, including zinc, copper, and notably, niobium, which was found at levels over 1,000 times greater than in the Sun. These elements are typically produced during the later stages of a star's life. Further data from NASA’s Transiting Exoplanet Survey Satellite (TESS) detected a regular brightness signal repeating every 4.4 days, consistent with a gas giant, roughly the size of Jupiter, orbiting very close to the white dwarf. This close proximity suggests the planet is losing its atmosphere due to the white dwarf’s intense radiation, with some of this escaping material potentia...

Trump Official Lauds Admin. for ‘Protecting White American Men From Discrimination’

Trump Official Lauds Admin. for ‘Protecting White American Men From Discrimination’

FTC Chair Andrew Ferguson is teaming up with JD Vance to crackdown on supposed fraud — and to protect the privileged

Astronomers Confirm Most Powerful Radio Galaxy from Early Universe

Astronomers Confirm Most Powerful Radio Galaxy from Early Universe

Astronomers have confirmed the existence of TXS 2354+015, a powerful radio galaxy from nearly 12.5 billion years ago, making it the second-most-distant radio galaxy ever found. This discovery was made by a team led by Barbara Balmaverde of the INAF Astrophysical Observatory of Turin. The galaxy was identified through a combination of deep optical imaging from Subaru's Hyper Suprime-Cam Subaru Strategic Program survey and radio catalogs like TGSS at 150 MHz and VLASS at 3 GHz. Researchers looked for galaxies whose light exhibited a characteristic 'dropout' signature, indicative of extreme distance, known as the Lyman-break technique. The optical spectrum of TXS 2354+015 showed a prominent Lyman-alpha emission line, and a second, fainter emission line helped confirm its redshift at 4.946, placing it when the universe was less than 1.2 billion years old. The precise positional match between optical and radio data, its rare radio brightness, and the expected ratio between radio and optical emission all support...

Demitra Kalogeras's Public Profile Reveals Inconsistencies in Biographical Data

Demitra Kalogeras's Public Profile Reveals Inconsistencies in Biographical Data

US freezes Microsoft, Adobe, Infosys green-card applications over alleged fraud

US freezes Microsoft, Adobe, Infosys green-card applications over alleged fraud

By Steve Holland and Akash Sriram WASHINGTON, Oct 8 (Reuters) - The Trump administration froze on Thursday some green-card filings by Microsoft, Adobe and major IT outsourcers and opened probes into nine elite universities, widening a visa crackdown it says targets fraud and American job losses.