Dust in the Stellar Winds

Terra, or planet Earth, is 1 trillion (1,000,000,000,000 or 1x10¹²) km³ in volume.

The Solar system, including the Oort Cloud, is 1.7 duodecillion (1.7x10³⁹) km³ in volume.

The Milky Way galaxy is 33 quarttuordecillion (3.3x10⁴⁶) km³ in volume.

The observable Universe is 213 duovigintillion (2.13 x 10⁷¹) km³ in volume.

The entire Universe may be as big as 21.3 untrigintillion (2.13 x 10⁹⁷) km³ in volume.  That doesn’t even take into account all the other universes in the Multiverse of which we are a part, much less the rest of the multiverses in the Omniverse.

A single human is, on average, 664 billionths (0.000000000664 or 6.64x10^-11) km³ in volume.

There are around 8.8 billion class-M (Earth-like) planets (out of 100 billion total) in the Milky Way galaxy alone, likely inhabited by sentient and intelligent humanoid species.  Pretending that humans are the median and that our current population is the average, that means there are as many as 61.6 quintillion (6.16x10¹⁹) humanoids in our galaxy.

Planet Earth is 4.54 billion years old.

The Solar system is 4.56 billion years old.

The Milky Way galaxy is 13.2 billion years old.

The Universe is 13.8 billion years old since the (most recent) Big Bang.

The average life expectancy of a human at birth worldwide is 67.2 years. 

The entire human race, Homo sapiens sapiens, has been around only 200,000 years of the 13.8 billion years this Universe has existed.