Hydrogen is the most abundant element in the Universe. By far. More than 90% of the atoms in the Universe are hydrogen. Ten times the number of helium atoms, and a hundred times more than all other elements combined. It’s everywhere, from the water in our oceans to the earliest regions of the Cosmic Dawn. Fortunately for astronomers, all this neutral hydrogen can emit a faint emission line of radio light.
Space News & Blog Articles
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Observing October's Annular Eclipse
If you'll be in the path of the October 14, 2023, annular eclipse, here's what you can look for as the Moon covers the face of the Sun.
4.6 billion-year-old meteorite could reveal how Earth formed different layers
One of the oldest meteorites ever discovered, the 4.6 billion-year-old Erg Chech 002 discovered in the Sahara desert in 2020, could reveal vital information about the formation of the solar system.
Photographer captures rare 'gigantic jets' of upside-down lightning blasting out of Atlantic hurricane
Gigantic jets, which are 50 times more powerful than typical lightning bolts and can reach the edge of space, were seen erupting out of Hurricane Franklin near Puerto Rico.
Europe hopes to announce Ariane 6 debut flight date by the end of October
The European Space Agency won't know when its delayed heavy-lift Ariane 6 rocket will make its debut flight until at least the end of October when the main testing is supposed to be completed.
Quantum science: shaken, driven, dropped, and flown
As quantum technology continues to shape our future, quantum entanglement remains a crucial element in unlocking valuable space applications, but how robust is it?
Europe assembles Hera spacecraft to eye aftermath of DART asteroid crash (video, photos)
The European Space Agency's Hera spacecraft is now assembled ahead of its journey to analyze the asteroid smashed by NASA's DART mission.
The ozone hole above Antarctica opened early this year. Huge Tonga undersea volcano eruption may be to blame
The ozone hole above Antarctica has opened up unusually early this year. Scientists think the Hunga Tonga volcanic eruption that sent shockwaves around the world in January 2022 may be to blame.
Some Galaxies Contain Double Supermassive Black Holes
Blazars occupy an intriguing spot in the cosmic zoo. They’re bright active galactic nuclei (AGN) that blast out cosmic rays, are bright in radio emission, and sport huge jets of material traveling in our direction at nearly the speed of light. Their jets look curvy and snaky. Astronomers have questions.
Marvel's 'Predator vs. Wolverine #1' claws its way through 8 awesome variant covers
Marvel Comics has offered a preview of eight variant covers for its upcoming 'Predator vs. Wolverine #1.'
It's Going to Take More Than Early Dark Energy to Resolve the Hubble Tension
Our best understanding of the Universe is rooted in a cosmological model known as LCDM. The CDM stands for Cold Dark Matter, where most of the matter in the universe isn’t stars and planets, but a strange form of matter that is dark and nearly invisible. The L, or Lambda, represents dark energy. It is the symbol used in the equations of general relativity to describe the Hubble parameter, or the rate of cosmic expansion. Although the LCDM model matches our observations incredibly well, it isn’t perfect. And the more data we gather on the early Universe, the less perfect it seems to be.
Astronauts on ISS can face muscle loss in microgravity – a new ESA experiment may help
The European Space Agency (ESA) is exploring the idea of treating muscle loss in astronauts with brief electrical impulses.
Crew Dragon safely splashes down east of Jacksonville
Crew Dragon streaks through the midnight sky as seen from NASA’s Kennedy Space Center. Image: Will Robinson-Smith/Spaceflight Now.
Blazing like a shooting star as it streaked high above northern Florida, a SpaceX Crew Dragon spacecraft carried four space station fliers back to Earth early Monday, splashing down in the Atlantic Ocean east of Jacksonville to wrap up a six-month stay in orbit.
Chandrayaan-3 rover and lander in sleep mode but might wake up later this month
India's Chandrayaan-3 lunar rover and lander have completed their primary mission goals and have been placed into sleep mode ahead of the upcoming two-week lunar night.
'NightWatch' stargazing guide scores a brand-new updated edition for 2023
The new fifth edition of the indispensable "NightWatch: A Practical Guide To Viewing The Universe" lands on Sept. 7.
'Star Trek' Day 2023 arrives this week to celebrate 'The Original Series' 1966 launch
A guide to all the official activities coming for "Star Trek" Day 2023 landing Sept. 8
ESA Open Day at ESTEC 2023: Registration now open
Take your chance to meet astronauts, view spacecraft and peer behind the scenes of Europe’s space adventure at our ESA Open Day at ESTEC in the Netherlands on Sunday 8 October. Registration is now open.
Hundreds of supernova remnants remain hidden in our galaxy. These astronomers want to find them
Finding more debris from stellar explosions will tell us about how heavy elements are distributed across the galaxy.
Galaxy shapes can help identify wrinkles in space caused by the Big Bang
A new method to detect Baryon Acoustic Oscillations in the universe could help measure cosmic distances more accurately.
NASA's OSIRIS-REx mission almost bit the dust — then Queen guitarist Brian May stepped in
The OSIRIS-REx spacecraft will soon return to Earth. What's on board could reveal the extraterrestrial origins of life on Earth.
