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Hydrogen

All articles tagged with #hydrogen

Alpine's Alpenglow Hydrogen V6 Roars to 9,000 RPM with Water-Only Exhaust
technology1 month ago

Alpine's Alpenglow Hydrogen V6 Roars to 9,000 RPM with Water-Only Exhaust

Alpine’s Alpenglow hydrogen-powered V6 prototype revs to 9,000 rpm, delivering about 740 hp and a top speed of 205 mph while emitting only water vapor. The design uses a pre-chamber and regulator for hydrogen at ~700 bar, with compact storage tanks and standard radiators to maintain aero efficiency. Blue energy-recovery brake lights and a transparent acrylic rear spoiler underscore that this car is a mobile lab for testing hydrogen in high-performance applications, suggesting clean-energy ICE viability without heavy battery packs.

via supercarblondie.com|
#alpine#hydrogen#internal-combustion
Cosmic dawn mapped in 3D reveals a sea of light across the early universe
space1 month ago

Cosmic dawn mapped in 3D reveals a sea of light across the early universe

Astronomers used line-intensity mapping from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) to create a 3D map of the early universe, revealing a vast ‘sea of light’ from hydrogen Lyman-alpha emission that traces galaxy and gas distributions 9–11 billion years ago. The work helps probe gravity and dark energy’s role in cosmic evolution, leveraging hundreds of millions of spectra; further noise-reduction advances will enable mapping even fainter structures and tighten cosmological constraints.

via Live Science|
#astronomy#cosmology#hetdex
Earth’s Core Could Hold 45 Oceans of Water, New Study Suggests
science1 month ago

Earth’s Core Could Hold 45 Oceans of Water, New Study Suggests

A Nature Communications study led by Motohiko Murakami suggests hydrogen from early Earth became chemically bound inside the metallic core as iron hydrides, not as free gas or water. If hydrogen accounts for up to about 0.36% of the core’s mass, this could translate to roughly 45 oceans’ worth of water, implying Earth’s surface water may be just a fraction of a much larger deep-water inventory formed during planet formation.

via The Daily Galaxy|
#earths-core#high-pressure-experiments#hydrogen
space1 month ago

NASA readies second full fueling test for SLS in Artemis countdown drills

NASA will conduct a second, full wet dress rehearsal (WDR-2) of the Space Launch System at Launch Complex 39B, loading more than 700,000 gallons of liquid hydrogen and liquid oxygen and counting down to a simulated T-0 around Feb. 19 after a Feb. 12 confidence test that yielded useful data but pointed to a ground equipment issue; a firm launch date will follow a successful WDR-2, with March 6 cited as the earliest possible window.

via Spaceflight Now|
#artemis#hydrogen#nasa
Earth's Core May Harbor Massive Hydrogen Reserves, Redrawing Water's Origin
science1 month ago

Earth's Core May Harbor Massive Hydrogen Reserves, Redrawing Water's Origin

A Nature Communications study estimates Earth’s molten iron core could host a vast hydrogen reservoir—potentially the planet’s largest—amounting to about 0.07% to 0.36% of the core’s weight, equivalent to roughly nine to 45 hydrogen oceans. Using atom probe tomography and high-pressure iron experiments to mimic core formation, researchers examined how hydrogen interacts with silicon and oxygen under extreme conditions. If confirmed, this suggests Earth acquired most of its water during its early growth rather than via late comet deliveries and may relate to heat flow that helps power the magnetic field; however, the estimate relies on indirect methods with uncertainties, and further work is needed to refine the numbers.

via cnn.com|
#diamond-anvil-cell#dongyang-huang#earths-core
New Study Reveals Hydrogen's Limited Climate Benefits and Global Budget Challenges
environment3 months ago

New Study Reveals Hydrogen's Limited Climate Benefits and Global Budget Challenges

A study published in Nature warns that hydrogen, often seen as a clean energy source, may contribute to climate change by prolonging methane's presence in the atmosphere, thus slightly increasing global temperatures. The rise in hydrogen emissions, mainly from human activities like industrial leaks and fossil fuel use, indirectly enhances warming by reducing atmospheric detergents that break down methane, highlighting the need for a deeper understanding of hydrogen's role in climate dynamics.

via ScienceAlert|
#climate-change#environment#global-warming
The Rising Importance of a Global Hydrogen Budget in Climate Change
science3 months ago

The Rising Importance of a Global Hydrogen Budget in Climate Change

The article discusses the global hydrogen budget, highlighting the current reliance on energy-intensive grey hydrogen, the potential shift towards green and blue hydrogen by 2030–2040, and the climate implications of hydrogen leakage, which acts as an indirect greenhouse gas. It presents a comprehensive analysis of hydrogen sources and sinks over the past three decades, estimates the recent decade's hydrogen budget, and projects future climate impacts, emphasizing the need for better data and understanding of hydrogen's role in the climate system.

via Nature|
#blue-hydrogen#climate-change#green-hydrogen
Energy Department Cuts Green Projects Amid Shutdown Controversy
energy-and-environment6 months ago

Energy Department Cuts Green Projects Amid Shutdown Controversy

California's hydrogen industry faces a setback as the Biden administration cancels a $1.2 billion federal grant for a key hydrogen project, but state leaders and industry stakeholders remain optimistic about alternative funding and continued development, emphasizing California's commitment to clean energy despite federal setbacks.

via Politico|
#california#climate-policy#energy-and-environment
New Gas Bridge Between Galaxies Reveals Cosmic Matter Cycle
science6 months ago

New Gas Bridge Between Galaxies Reveals Cosmic Matter Cycle

A new discovery from the WALLABY survey using the ASKAP telescope revealed a 160,000-light-year-long gas bridge between two dwarf galaxies, formed by tidal interactions, and a massive gas tail caused by ram pressure as the galaxies move through the Virgo cluster's hot gas, providing insights into the cosmic cycle of matter between galaxies and intergalactic space.

via The Conversation|
#galaxies#gas-bridge#hydrogen