Joe Palca
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NASA's Nancy Grace Roman Space Telescope launches Aug. 30 on a mission to explore some of the most pressing mysteries of the cosmos. -
NASA's Nancy Grace Roman Space Telescope, set to launch this weekend, may shed new light on the nature of dark energy -- that mysterious force causing the universe to expand.
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Why did a $72 million mission to study water on the moon fail so soon after launch? A new NASA report has the answer. -
The Lunar Trailblazer orbiter's launch window opens Feb 26. It's catching a ride with Intuitive Machines IM-2 mission which is landing on the moon near the south pole. Both have instruments for looking for water. -
Two studies that have not yet been peer reviewed indicate increased protection against the infectious omicron variant. -
The US Food and Drug Administration has authorized COVID vaccine boosters for all adults. We look at what this means for people who are considering getting their third shot.
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The companies say a study of more than 10,000 volunteers showed a vaccine efficacy of 95% or greater for people receiving the booster. -
A COVID-19 vaccine for children younger than 12 is not yet available, but research is well underway and the first shot for some kids in this age group is expected in the fall, doctors say. -
In a large-scale study, Novavax said its vaccine was completely effective against the original coronavirus strain and also effective against some variants. It works differently than other vaccines. -
An analysis of blood from people who had received the Johnson & Johnson COVID-19 vaccine found a lower level of neutralizing antibodies against viral variants but a strong response involving T cells.
