Science & Space Roundup: Top News of the Day (April 21)

Here are today’s most important updates from the realm of Science and Space. Scientists Spot ‘Bathtub Ring’ Evidence of Ancient Martian Sea A newly identified geological feature on Mars may provide the strongest evidence yet that the Red Planet once hosted a vast, long-lived ocean. Researchers from California Institute of Technology (Caltech) have discovered what they describe as a bathtub ring, a broad, flat band of terrain, that could mark the boundary of an ancient ocean covering nearly one-third of Mars’ surface. Scientists have long known that Mars once had liquid water, but whether it formed only lakes and rivers or vast oceans has remained uncertain. Previous missions have spotted features resembling shorelines, but these were inconsistent in elevation, unlike Earth, where sea levels are relatively uniform. This inconsistency has made it difficult to confirm the existence of a stable Martian ocean. According to the study, such a landform would ...

Soham Halder

• 8 hours ago
• 4 minutes read