A new study modeled the chemistry of TOI-270 d, an exoplanet between Earth and Neptune in size, finding evidence that it could be a giant rocky planet shrouded in a thick, hot atmosphere. TOI-270 d is ...

The ancient Egyptians believed that hieroglyphs had been invented by the gods. The Rosetta stone was discovered in 1799 AD. It is a three-foot high stone containing hieroglyphs, everyday ancient ...