Our Amazing Universe...

Though Asteroids are a possibilty.. but melting is more of a probabilty..
At this time but still..
The Huge Arecibo space research center that can track threatening
asteroids..
Because of budget woes.. may signal an end for telescope..
And it is the only facility on the planet able to track asteroids with enough percision to tell which ones might plow into the Earth...

As scientists discovered in the 1930's,
atomic particles whizzing around in space can emit radio waves of various forms and intensities.
Those waves..
which, unlike visible light and other kinds of electromagnetic energy, easily penetrate cosmic dust of Earth's atmosphere --
tell scientists what kinds of matter and energy are out there and how they are behaving..

That kind of information pulls the veil from how the universe matured..
( unevenly , with lumps of unimaginable density and vast expanses far emptier than any vacuum on Earth )
: what it is made of..
( about 95 percent is " dark energy " and " dark matter," compounds that scientists know virtually nothing about);
and what holds it all together..
( nobody understands what gravity really is ),
even as the universe expands..