Reputation
562
Top tag
Next privilege 750 Rep.
See votes, expandable usercard
Badges
1 10
Impact
~6k people reached

  • 0 posts edited
  • 0 helpful flags
  • 37 votes cast
Jul
24
comment why do peple think the most energetic events in the universe are GRBs?
Yes. I heard this at several lectures. Maybe it is because we have not found or confirmed one. I thought the 1st paragraph shows this. Anyway, it seems people do not talk about this kind of phenomena much. I doubt it is possible they could be less energetic than a GRB?
Jul
22
comment why do peple think the most energetic events in the universe are GRBs?
Many speakers like to mention GRBs that way. en.wikipedia.org/wiki/Gamma-ray_burst also shows this kind of tendency.
Jul
20
asked why do peple think the most energetic events in the universe are GRBs?
Jul
20
reviewed Approve about H$_\alpha$ and H$_\beta$ lines in astronomical objects' spectra
Jul
16
revised which pulsar has the longest spin period so far?
edited body
Jul
16
comment which pulsar has the longest spin period so far?
i am still confused. Relative questions are added in the end.
Jul
16
revised which pulsar has the longest spin period so far?
added 110 characters in body
Jul
16
revised which pulsar has the longest spin period so far?
added 160 characters in body
Jul
16
revised which pulsar has the longest spin period so far?
added 388 characters in body
Jul
15
revised which pulsar has the longest spin period so far?
added 72 characters in body
Jul
15
asked which pulsar has the longest spin period so far?
Jul
15
comment How to tell a crater is old or not?
@atom we can derive the ages of many craters in a non-direct way. For most of them, we are not able to get a sample now.
Jul
14
awarded  Popular Question
Jul
13
revised Which kind of properties can we get for cosmic ray particles hitting on an optical ccd?
added 45 characters in body
Jul
8
revised How to tell a crater is old or not?
deleted 9 characters in body; edited title
Jul
8
comment How to tell a crater is old or not?
Crater morphology is more direct,right?
Jul
7
comment about H$_\alpha$ and H$_\beta$ lines in astronomical objects' spectra
I revised the title. It is not necessarily a stellar spectrum.
Jul
7
revised about H$_\alpha$ and H$_\beta$ lines in astronomical objects' spectra
edited title
Jul
7
asked How to tell a crater is old or not?
Jul
7
comment about H$_\alpha$ and H$_\beta$ lines in astronomical objects' spectra
scratch? That is awesome job!