stars

Survey of more than 800 planet formation disks reveals a surprise in planetary evolution

Is our solar system similar to other solar systems? What do other systems look like? We know from studies of exoplanets that many other systems have hot exoplanets, huge gas giants that orbit near their stars. Is this normal and our solar system is outside? One way to address these questions is to study the …

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This record-breaking “gold standard” star is different from any we’ve seen before

What is in the star? Well, if you’re a very high-end model nearing the end of its life called the HD 222925, it’s a lot, actually. Scientists conducted an analysis of this opaque object, and identified 65 separate components. This is the largest number of elements found in a single body outside the solar system, …

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The stunning image gets us so excited about what the James Webb Space Telescope can do

All four science instruments on NASA’s James Webb Space Telescope have achieved “perfect alignment” ahead of their official debut this summer, project officials said in a news conference call Monday (May 9). “I am pleased to report that the telescope’s alignment has been completed with better performance than we expected,” said Michael McElwain, James Webb …

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Something is glowing in the heart of the galaxy, and we can be closer to solving the mystery

Something deep in the heart of the Milky Way is glowing with gamma rays, and no one can know for sure what it might be. Dark matter collisions have been proposed, excluded and then temporarily reconsidered. Dense, rapidly rotating objects called pulsars were also considered as candidate sources of high-energy rays, before they were dismissed …

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