SETI Institute20 分钟
Space in 2025: What to Expect
As we move into 2025, the field of space exploration is buzzing with exciting missions, new technologies, and a renewed focus ...
There's still time to see the 'planet parade' that began in January: Here's what's visible
Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may ...