Trump again called on the United States to send astronauts to Mars in his speech to a joint session of Congress.

According to NASA, multi-planet lineups are visible "every few years," but a seven-planet alignment is particularly uncommon, as each planet's orbit varies, with some moving more quickly and Mercury, ...

Earth recorded its hottest year ever in 2024, with such a big jump that the planet temporarily passed ... isn't just a number — it's a red flag. Surpassing it even for a single year shows ...