Why is one half of Mars so different to the other? ‘Marsquakes’ may have just revealed the answer
A map showing the ‘Martian dichotomy’: the southern highlands are in yellows and oranges, the northern lowlands in…
Seismic echoes reveal a mysterious ‘donut’ inside Earth’s core
Rost9 / Shutterstock Hrvoje Tkalčić, Australian National University About 2,890 kilometres beneath our feet lies a gigantic ball…