"What is it?" Riddles

It can't be seen or felt.
It can't be touched or smelt.
Behind stars and under hills.
All emptiness it fills.
What is it?

With pointed fangs it sits in wait,
With piercing force it doles out fate,
Over bloodless victims proclaiming its might,
Eternally joining in a single bite
What is it?

Give it a toss, and it's ready, but not until it's dressed. What is it?

This is rectangular, hollow and has a lid, and where you’ll find it you might wonder, it is just six feet under. What is it?

It stands on one leg with its heart in its head. What is it?

Not a comb or a brush but makes the hair feel plush. What is it?

Looks like water, but it's heat.
Sits on sand, lays on concrete.
A play on the eyes, but it's all lies.
What is it?

It could make arrows fly and kites soar. What is it?

A home of wood in a wooded place, but built not by hand. High above the earthen ground, it holds its pale blue gems. What is it?

This small creature kills even the largest one. What is it?

Never alive but practically extinct.
How we miss the letters pressing the ribbon of ink.
What is it?

Both a currency and an antlered male. What is it?

A hill full, a hole full; yet you cannot catch a bowl full. What is it?

It is a symphony of noise,
It can produce both grief and joys,
It is inspiring and grand,
Made by a person or a band.
What is it?

You can spin, wheel and twist, but this thing can turn without moving. What is it?

It's been around for millions of years, but is never more than a month old. What is it?