/u/Ephemeris's posts in /r/askscience

Year:

Only show posts with narrations

Would it be more fuel efficient and less dangerous to float a rocket into the upper atmosphere with balloons before igniting the boosters?

3757 upvotes

Mark as read: Add to a list

Galaxies and the Roche limit

46 upvotes

Mark as read: Add to a list

Why does the JWST need to be in a "halo orbit" at the L2 Lagrange point?

43 upvotes

Mark as read: Add to a list

Why does it take so much longer for the Earth's magnetic field to flip directions than it does for the Sun to do the same?

28 upvotes

Mark as read: Add to a list

Stars made from elements other than Hydrogen?

10 upvotes

Mark as read: Add to a list

Can an orbit be circular?

8 upvotes

Mark as read: Add to a list

What is the nature of absorption

3 upvotes

Mark as read: Add to a list

What exactly is happening when I get a "second wind"?

2 upvotes

Mark as read: Add to a list

If someone with a pace maker dies, does the heart continue pumping blood?

1 upvotes

Mark as read: Add to a list

Do atoms have color?

1 upvotes

Mark as read: Add to a list

Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Would it be more fuel efficient and less dangerous to float a rocket into the upper atmosphere with balloons before igniting the boosters?	3757
Galaxies and the Roche limit	46
Why does the JWST need to be in a "halo orbit" at the L2 Lagrange point?	43
Why does it take so much longer for the Earth's magnetic field to flip directions than it does for the Sun to do the same?	28
Stars made from elements other than Hydrogen?	10
Can an orbit be circular?	8
What is the nature of absorption	3
What exactly is happening when I get a "second wind"?	2
If someone with a pace maker dies, does the heart continue pumping blood?	1
Do atoms have color?	1