Did comets bring building blocks of life to Earth? Scientists aren't so sure anymore

space.com Nov 12, 2026

Did comets bring building blocks of life to Earth? Scientists aren’t so sure anymore

Curated by Shubham · TechCapsules · Nov 12, 2026

AI-summarised brief · reviewed before publication

New research by Cambridge planetary scientist Richard Anslow and colleagues concludes that comets were unlikely to have delivered Earth’s complex organic molecules. Using advanced simulations of comet trajectories, atmospheric entry, and hypervelocity impacts, the team found that comet speeds and angles typically vaporize organic compounds, with only a one‑in‑a‑million chance of survival. The study suggests Earth’s prebiotic chemistry probably originated locally or via asteroid delivery, challenging the long‑held comet‑seeding hypothesis.

💡 Why It Matters

· The finding redirects the search for life’s origins toward Earth‑based processes or asteroid contributions, reshaping our understanding of how life’s building blocks first assembled.

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On this day in space! Nov. 11, 1966: NASA launches Gemini 12…

On November 11, 1966, NASA launched Gemini 12 from Kennedy Space Center, the final mission of the Gemini program. Commander Jim Lovell and pilot Buzz Aldrin orbited Earth for four days, performing three successful spacewalks and docking with an unpiloted Agena booster. The mission refined spacewalk techniques, introducing handrails and foot restraints that later proved essential for Apollo lunar missions. Gemini 12 also tested a computer‑controlled reentry, landing the crew within three miles of their recovery ship. Both astronauts later joined the Apollo program, with Aldrin walking on the Moon in 1969 and Lovell commanding Apollo 13.

💡 Gemini 12’s innovations in extravehicular activity and automated reentry set the operational standards that enabled safe lunar landings, directly shaping the success of the Apollo missions.

teslarati.com · Nov 12

SpaceX’s $24B Starbase supercomputer plan slipped past a key roadblock

SpaceX has filed a request with City of Starbase, Texas, for a property‑tax abatement and economic‑development agreement to build a $24 billion natural‑gas power plant and super‑computing complex on 444 acres near Boca Chica Boulevard and the Port of Brownsville. The proposal, slated for a City Commission hearing on Dec. 9, would create a 750‑megawatt facility powered by 35 mobile gas turbines, allowing the company to bypass the state grid and avoid data‑center moratoriums in neighboring Brownsville. The land was annexed by Starbase after Brownsville approved its removal from city limits in exchange for a $220 million water‑infrastructure pledge. Two of the three commissioners voting on the incentive are SpaceX executives, and the project faces pending air‑quality permits and opposition from an environmental group.

💡 By generating its own power, SpaceX sidesteps state‑level data‑center restrictions, securing a critical infrastructure foothold for its ambitious compute expansion. The tax break and local political influence could set a precedent for private‑sector energy autonomy in contested jurisdictions.

space.com · Nov 12

NASA kick-starts a fresh push to bring Mars samples home

NASA has launched the Perseverance Sample Retrieval Architecture (PSRA) to revitalize its Mars Sample Return (MSR) effort. Announced by Mars Exploration Program director Tiffany Morgan at a virtual MEPAG meeting on Nov. 9, the initiative will produce independent recommendations for collecting the rock and soil tubes cached by the Perseverance rover and delivering them to Earth. A PSRA strategy team convenes in January 2027, with a final report slated for winter 2027‑2028. The program follows years of costly MSR studies that projected $8‑$11 billion expenses and return dates between 2035 and 2040. Scientists argue that early sample return is critical for assessing hazardous chemicals, dust properties, and potential biosignatures before any crewed mission. The findings will also guide landing site selections and development.

💡 By characterizing Martian toxins and dust before humans set foot, the effort directly de‑risks crewed exploration and informs suit and habitat design.

spacenews.com · Nov 12

Senate committee takes up nominees for NASA chief financial officer and inspector…

The Senate Commerce Committee held a hearing on Nov. 10 to consider nominations for NASA’s chief financial officer and inspector general, naming accountant Joshua Shoemaker and longtime inspector‑general staffer Robert Steinau for the posts. Both nominees received few questions as senators focused on an FCC nomination. Shoemaker, with two decades in private and state finance and a recent senior advisory role at NASA, pledged to enhance financial accountability, transparency to Congress, and modernize NASA’s financial systems. Steinau, who has served at NASA’s Office of Inspector General since 2009 and acted as its senior official since Dec. 2024, said he would tackle oversight of the lunar return, ISS transition, and cybersecurity. The committee will vote on Nov. 18 before sending the nominations to the full Senate.

💡 Confirming these leaders will finally give NASA the oversight and fiscal clarity it has lacked for years, enabling tighter control of costly moon and commercial‑station programs.

space.com · Nov 11

NASA’s new UVEX space telescope will peer deep into the universe’s most…

NASA’s Ultraviolet Explorer (UVEX), a $590 million mission developed with Caltech, will launch in 2031 to produce the first deep all‑sky ultraviolet maps. UVEX will detect nearby low‑mass galaxies, study supernova remnants, and capture the aftermath of neutron‑star mergers, complementing infrared surveys like SPHEREx and visible‑light mapping by the Vera C. Rubin Observatory. Its CMOS‑based sensors provide unprecedented UV sensitivity, enabling astronomers to trace infant stars and violent cosmic events across the universe.

💡 UVEX will fill a critical gap in multi‑wavelength astronomy, revealing phenomena invisible in other spectra and advancing our understanding of stellar evolution and heavy‑element synthesis.

space.com · Nov 11

‘There’s tremendous demand’: Rocket Lab raises price of Neutron launch from $55…

Rocket Lab announced on Nov. 9 that it has raised the price of a Neutron launch from $55 million to $70 million, a 25 percent increase for a vehicle slated to debut in 2027. CEO Peter Beck said the hike reflects a “pent‑up launch market” and a forecasted bottleneck as SpaceX retires Falcon 9 around 2028. Despite delays that pushed Neutron’s first flight from late 2026 to 2027, the company booked eight launches for Q3 2026, worth roughly $515 million, and has sold out its first 16 missions, with later slots pushed into the 2030s. Neutron, a 141‑foot reusable medium‑lift rocket capable of delivering 13 metric tons to low‑Earth orbit, aims to fill the gap left by Falcon 9’s phase‑out, while Rocket Lab’s smaller Electron launcher is also expected to see heightened demand as rideshare slots on Falcon 9 dwindle.

💡 Rocket Lab’s price jump underscores that commercial launch capacity is becoming a scarce commodity, positioning Neutron as a premium alternative to SpaceX’s retiring workhorse.