The “dark energy” field that has fueled the expansion has been weakening over the past 4 billion to 5 billion years, new data ...
Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.
The European Space Agency has released the first batch of large-scale images from the Euclid space telescope, which ...
Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.
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