New accreting millisecond X-ray pulsar discovered

Astronomers report the discovery of a new pulsar using the Spektr-RG space observatory. The newfound object, designated SRGA J144459.2−604207 (or SRGA J1444 for short), turns out to be a bursting accreting millisecond X-ray ...

How NASA's Roman mission will hunt for primordial black holes

Astronomers have discovered black holes ranging from a few times the sun's mass to tens of billions. Now a group of scientists has predicted that NASA's Nancy Grace Roman Space Telescope could find a class of "featherweight" ...

Boeing Starliner crewed mission postponed shortly before launch

The first crewed flight of Boeing's Starliner spaceship was dramatically called off just two hours before launch after a new safety issue was identified, officials said Monday, pushing back a high-stakes test mission to the ...

Boeing Starliner crewed mission postponed until at least Friday

The first crewed launch of Boeing's Starliner spaceship will have to wait until at least Friday to give ground teams time to analyze a malfunctioning rocket valve, pushing back a high-stakes test trip to the International ...

What can early Earth teach us about the search for life?

Earth is the only life-supporting planet we know of, so it's tempting to use it as a standard in the search for life elsewhere. But the modern Earth can't serve as a basis for evaluating exoplanets and their potential to ...

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