One small step as Ireland pledges not to make claims in outer space
Treaty requires space be used for peaceful purposes with no stationing of weapons of mass destruction
Phenomenon only second one to be imaged, a feat achieved using Event Horizon Telescope
Research findings key to helping scientists understand how cosmic explosions work
Student Tyrone O’Doherty finds item researchers in Australia believe could be neutron star
Parker spacecraft plunged through corona in April, agency confirms
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