Comet C/2025 R2 (SWAN) can now be seen with binoculars close to Mars in the western sky after sunset.

The Advisory Committee on Immunization Practices has recommended against using the MMRV vaccine in children under 4. This could eliminate a choice for kids' first dose of measles, mumps, rubella and chickenpox prevention.

The polarization pattern around M87* — the first black hole to be directly imaged by the Event Horizon Telescope — has changed direction, and scientists aren't sure why.

A new report from the Commercial Space Federation warns that China could soon overtake the U.S. in the "new space race." The country's rapid progression starkly contrasts the limitations imposed on NASA by record-breaking budget cuts.

Lab-grown brain tissue is too simple to experience consciousness, but as innovation progresses, neuroscientists question whether it's time to revisit the ethics of this line of research.

Watch the crescent moon, Venus and the bright star Regulus align in a rare predawn close conjunction tomorrow.