Contrary to a popular theory that icy comets or asteroids delivered water to a dry newborn Earth, the planet itself may have produced its earliest water supply, a new study suggests.
This water would have stemmed from chemical interactions between an atmosphere rich in hydrogen, which researchers think enveloped the young Earth , and massive oceans of magma on the planet's surface.
Scientists say new asteroid is actually 'quasi-moon' | kcentv.com
MAUI COUNTY, Hawaii — That's no moon..., or actually, maybe it is. Scientists say that a newly discovered asteroid may actually be a "quasi-moon" that has orbited Earth for thousands of years.
According to Space.com and Sky and Telescope , asteroid 2023 FW13 circles the sun in sync with the Earth, and is in an orbit so large that it "sweeps out halfway to Mars and in halfway to Venus".
NASA's Lucy Mission Snaps its First Views of Trojan Asteroid Targets | NASA
Ask the dinosaurs: We aren't ready for an asteroid ‘Big One’ | The Seattle Times
But there's another looming natural disaster that we don't talk about much — and unlike the mega quake, this one is entirely preventable: an asteroid strike.
It is essential that we support efforts by NASA and others to detect NEOs, characterize them and prepare for a rapid response if we need to deflect one.
No comments:
Post a Comment