User uhoh

16

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2

answers

3k

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Why did Sputnik 1 have four antennas?

Oct 15 '16 at 5:55 uhoh 139k

16

votes

1

answer

615

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What are the differences in technology between OSIRIS-REx and Hayabusa missions?

asteroid technology sample-return osiris-rex hayabusa

Jun 6 '20 at 16:10 DarkDust 12.1k

16

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4

answers

12k

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Why do so few satellites pass over the poles, and why do so many focus on the equator?

orbital-mechanics artificial-satellite orbit polar-orbit

Dec 21 at 16:28 Fattie 1,534

16

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3

answers

10k

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How much RF transmit power does DSN need to send commands to Voyager?

nasa voyager power radio-communication deep-space-network

Nov 4 '16 at 23:57 Creation Factory 41

16

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2

answers

3k

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Nuances of the terms (mean / osculating / Keplerian / orbital) elements

terminology orbital-elements

Mar 4 at 17:33 Brandon Rhodes 856

16

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2

answers

2k

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Is the Falcon Heavy booster much simpler to land than the Falcon 9 first stage?

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Feb 13 '18 at 20:59 jkavalik 5,007

16

votes

2

answers

6k

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Are rocket exhaust flames ever opaque?

rockets exhaust

May 30 '16 at 15:06 uhoh 139k

16

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2

answers

4k

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How are GPS satellite clocks synchronized with each other in the earth's frame of reference?

Mar 7 '16 at 23:01 PearsonArtPhoto♦ 114k

16

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4

answers

10k

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Was Hubble really related to spy satellites?

artificial-satellite telescope optical hubble military

Mar 14 at 16:36 explainer 101

16

votes

3

answers

512

views

How would time measurement be done over great distances?

time

Jun 6 '19 at 7:59 Philipp 8,998

16

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3

answers

23k

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How to calculate delta-v required for a planet-to-planet Hohmann transfer?

orbital-mechanics orbital-maneuver interplanetary

May 18 '17 at 20:50 PHChilly 326

16

votes

5

answers

2k

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Jurisdiction over crime in space

law

Jul 24 '13 at 11:48 robguinness 597

16

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3

answers

2k

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Why would a mission to Sun-Earth L1 have an instantaneous launch window?

launch spacex falcon-9 lagrangian-points

Feb 24 at 13:58 honeste_vivere 1,168

15

votes

1

answer

550

views

Is radiation dose from cosmic rays higher behind 50 cm of shielding, or lower?

radiation cosmic-radiation 3d-modeling

Mar 30 '17 at 3:05 kim holder 20.6k

15

votes

1

answer

701

views

What amendments were made to the Outer Space Treaty?

law

May 23 '18 at 20:45 SpaceLawyer 1,299

15

votes

1

answer

891

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How did Goddard's rocket reach 41 feet altitude in under 2.5 seconds?

rockets simulation

Aug 22 '14 at 16:17 PearsonArtPhoto♦ 114k

15

votes

2

answers

30k

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Calculating solar system escape and and sun-dive delta V from lower Earth orbit

orbital-mechanics delta-v

Aug 14 '16 at 9:25 jeff 1

15

votes

2

answers

2k

views

Can the satellites in Martian orbit be put to use providing a rudimentary GPS system on Mars?

Sep 29 '14 at 23:16 Philipp 8,998

15

votes

2

answers

975

views

If we could send an orbiter to the Pluto-Charon system, could we put it in a stable orbit?

orbital-mechanics probe pluto

Apr 23 at 2:13 uhoh 139k

15

votes

3

answers

6k

views

Is the supercooled LOX used in Falcon 9 Full Thrust a first?

spacex falcon-9 fuel spaceflight-firsts sub-cooled

Sep 13 at 0:21 uhoh 139k

15

votes

3

answers

4k

views

Is this a correct understanding of Tsiolkovsky's rocket equation?

rockets delta-v specific-impulse mass-fraction rocket-equation

Dec 13 '16 at 5:38 Nayuki 109

15

votes

6

answers

24k

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Can an artificial satellite stay in orbit forever?

artificial-satellite orbit orbital-lifetime

Jan 17 '19 at 14:43 Felix 1

15

votes

1

answer

706

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What would have been the absolute maximum LEO payload of a two-stage Saturn V?

apollo-program low-earth-orbit payload saturn-v skylab

Jan 6 at 1:40 Russell Borogove 157k

15

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2

answers

4k

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Why did the Space Shuttles perform a rollover maneuver during launch?

launch space-shuttle

Mar 5 '17 at 16:22 JohnP 1,347

15

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3

answers

6k

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Minimum Orbit Altitude

orbital-mechanics low-earth-orbit

Oct 15 '17 at 14:26 Rory Alsop 13.3k

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2

answers

2k

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What software can be used to determine deep-space trajectories?

trajectory deep-space software gravity-assist mission-design

Oct 21 '15 at 11:16 CommunityBot 1

15

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1

answer

3k

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How long is it feasible to store cryogenic fuels?

fuel materials thermal cryogenics

Jun 25 '15 at 12:13 PearsonArtPhoto♦ 114k

15

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3

answers

913

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Has an SRB been considered for use in orbit to launch to escape velocity?

deep-space srb

Oct 30 '16 at 2:24 Organic Marble 147k

14

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3

answers

406

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How is RF spectrum usage coordinated in Mars orbit?

mars radio-communication

Jul 27 '20 at 1:42 Lou Scheffer 31

14

votes

3

answers

12k

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Can you swim in space?

movement

Jun 17 at 15:35 Abhishek Nayak 1

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Why did Sputnik 1 have four antennas?

What are the differences in technology between OSIRIS-REx and Hayabusa missions?

Why do so few satellites pass over the poles, and why do so many focus on the equator?

How much RF transmit power does DSN need to send commands to Voyager?

Nuances of the terms (mean / osculating / Keplerian / orbital) elements

Is the Falcon Heavy booster much simpler to land than the Falcon 9 first stage?

Are rocket exhaust flames ever opaque?

How are GPS satellite clocks synchronized with each other in the earth's frame of reference?

Was Hubble really related to spy satellites?

How would time measurement be done over great distances?

How to calculate delta-v required for a planet-to-planet Hohmann transfer?

Jurisdiction over crime in space

Why would a mission to Sun-Earth L1 have an instantaneous launch window?

Is radiation dose from cosmic rays higher behind 50 cm of shielding, or lower?

What amendments were made to the Outer Space Treaty?

How did Goddard's rocket reach 41 feet altitude in under 2.5 seconds?

Calculating solar system escape and and sun-dive delta V from lower Earth orbit

Can the satellites in Martian orbit be put to use providing a rudimentary GPS system on Mars?

If we could send an orbiter to the Pluto-Charon system, could we put it in a stable orbit?

Is the supercooled LOX used in Falcon 9 Full Thrust a first?

Is this a correct understanding of Tsiolkovsky's rocket equation?

Can an artificial satellite stay in orbit forever?

What would have been the absolute maximum LEO payload of a two-stage Saturn V?

Why did the Space Shuttles perform a rollover maneuver during launch?

Minimum Orbit Altitude

What software can be used to determine deep-space trajectories?

How long is it feasible to store cryogenic fuels?

Has an SRB been considered for use in orbit to launch to escape velocity?

How is RF spectrum usage coordinated in Mars orbit?

Can you swim in space?